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Question 1
Correct
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A 55-year-old woman visits her GP complaining of a burning sensation in her chest after eating meals for the past 2 months. She explains that this pain usually occurs after consuming heavy meals and can keep her up at night. Despite trying over-the-counter antacids, she has found little relief. The pain is retrosternal, without radiation, and is not aggravated by physical activity. She denies any difficulty or pain while swallowing and has not experienced any weight loss. She is worried that she may be having a heart attack every time this happens as both her parents died from coronary artery disease. She has no other medical conditions and is not taking any regular medications. An ECG reveals normal sinus rhythm without ischaemic changes. What is the most probable diagnosis?
Your Answer: Gastro-oesophageal reflux disease (GORD)
Explanation:Differential Diagnosis for Retrosternal Pain: GORD, PUD, MI, Pancreatitis, and Pericarditis
When a patient presents with retrosternal pain, it is important to consider various differential diagnoses. In this case, the patient’s pain is burning in nature and occurs in the postprandial period, making gastro-oesophageal reflux disease (GORD) a likely diagnosis. Other common manifestations of GORD include hypersalivation, globus sensation, and laryngitis. However, if the patient had any ‘alarm’ symptoms, such as weight loss or difficulty swallowing, further investigation would be necessary.
Peptic ulcer disease (PUD) is another potential cause of deep epigastric pain, especially in patients with risk factors such as Helicobacter pylori infection, non-steroidal anti-inflammatory use, and alcoholism.
Myocardial infarction (MI) is less likely in this case, as the patient’s pain does not worsen with exertion and is not accompanied by other cardiac symptoms. Additionally, the patient’s ECG is normal.
Pancreatitis typically presents with abdominal pain that radiates to the back, particularly in patients with gallstones or a history of alcoholism. The patient’s non-radiating, retrosternal burning pain is not consistent with pancreatitis.
Pericarditis is characterized by pleuritic chest pain that is aggravated by inspiration and lying flat, but relieved by sitting forward. Widespread ST-segment elevation on electrocardiogram is also common. Non-steroidal anti-inflammatories are typically used as first-line treatment.
In summary, a thorough consideration of the patient’s symptoms and risk factors can help narrow down the potential causes of retrosternal pain and guide appropriate diagnostic and treatment strategies.
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This question is part of the following fields:
- Gastroenterology
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Question 2
Correct
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A 40-year-old man has been admitted after a severe paracetamol overdose. Despite medical intervention, he has developed liver failure. What is the most probable outcome of the liver failure?
Your Answer: Lactic acidosis is recognised complication
Explanation:N-acetylcysteine reduces morbidity and mortality in fulminant hepatic failure
Fulminant hepatic failure is a serious condition that can lead to severe hypoglycemia and exacerbate encephalopathy in 40% of patients. This condition can develop rapidly and recur with sepsis. Lactic acidosis is also a common complication due to decreased hepatic lactate clearance, poor peripheral perfusion, and increased lactate production. Unfortunately, the prognosis for patients with fulminant hepatic failure is poor if they have a blood pH less than 7.0, prolonged prothrombin time (more than 100s), and serum creatinine more than 300 uM. Mortality is also greater in patients over 40 years of age. However, the use of intravenous N-acetylcysteine has been shown to reduce morbidity and mortality in these patients.
Overall, it is important to closely monitor patients with fulminant hepatic failure and address any complications that arise. The use of N-acetylcysteine can be a valuable tool in improving outcomes for these patients.
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This question is part of the following fields:
- Gastroenterology
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Question 3
Correct
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A 76-year-old woman comes to the Emergency Department complaining of worsening epigastric pain over the past two weeks. She describes a deep pain in the central part of her abdomen that tends to improve after eating and worsens approximately two hours after the meal. The pain does not radiate. The patient has a medical history of rheumatoid arthritis and takes methotrexate and anti-inflammatory medications. She is also a heavy smoker. Her vital signs are within normal limits. On examination, there is tenderness in the epigastric region without guarding or rigidity. Bowel sounds are present. What is the most likely diagnosis for this patient?
Your Answer: Peptic ulcer disease (PUD)
Explanation:Differential Diagnosis for Epigastric Pain: Peptic Ulcer Disease, Appendicitis, Chronic Mesenteric Ischaemia, Diverticulitis, and Pancreatitis
Epigastric pain can be caused by various conditions, and it is important to consider the differential diagnosis to provide appropriate treatment. In this case, the patient’s risk factors for non-steroidal anti-inflammatory use and heavy smoking make peptic ulcer disease (PUD) in the duodenum the most likely diagnosis. Other potential causes of epigastric pain include appendicitis, chronic mesenteric ischaemia, diverticulitis, and pancreatitis. However, the patient’s symptoms and clinical signs do not align with these conditions. It is important to consider the patient’s medical history and risk factors when determining the most likely diagnosis and appropriate treatment plan.
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This question is part of the following fields:
- Gastroenterology
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Question 4
Correct
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A 21-year-old woman is brought to the Emergency Department by her flatmates who claim that she has vomited up blood. Apparently she had consumed far too much alcohol over the course of the night, had vomited on multiple occasions, and then began to dry-retch. After a period of retching, she vomited a minimal amount of bright red blood. On examination, she is intoxicated and has marked epigastric tenderness; her blood pressure is 135/75 mmHg, with a heart rate of 70 bpm, regular.
Investigations:
Investigation
Result
Normal value
Haemoglobin 145 g/l 115–155 g/l
White cell count (WCC) 5.4 × 109/l 4–11 × 109/l
Platelets 301 × 109/l 150–400 × 109/l
Sodium (Na+) 142 mmol/l 135–145 mmol/l
Potassium (K+) 3.8 mmol/l 3.5–5.0 mmol/l
Creatinine 75 μmol/l 50–120 µmol/l
Which of the following is the most appropriate treatment for her?Your Answer: Discharge in the morning if stable
Explanation:Management of Mallory-Weiss Tear: A Case Study
A Mallory-Weiss tear is a longitudinal mucosal laceration at the gastro-oesophageal junction or cardia caused by repeated retching. In a stable patient with a Hb of 145 g/l, significant blood loss is unlikely. Observation overnight is recommended, and if stable, the patient can be discharged the following morning. Further endoscopic investigation is not necessary in this case. Intravenous pantoprazole is not indicated for a Mallory-Weiss tear, and antacid treatment is unnecessary as the tear will heal spontaneously. Urgent endoscopic investigation is not required if the patient remains clinically stable and improves.
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This question is part of the following fields:
- Gastroenterology
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Question 5
Correct
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A 50-year-old obese woman presents to the Emergency Department (ED) with increasing shortness of breath and right-sided chest pain over the past few days. She appears unwell and has a temperature of 38.9°C. On room air, her oxygen saturations are 85%, and her blood pressure is 70/40 mmHg with a heart rate of 130 beats per minute in sinus rhythm. A chest X-ray (CXR) reveals consolidation in the right lower lobe, and her blood tests show bilirubin levels of 120 µmol/litre and ALP levels of 300 IU/litre. She also experiences tenderness in the right upper quadrant.
What additional investigation would you perform to confirm the diagnosis?Your Answer: Ultrasound scan abdomen
Explanation:Diagnostic Tests for Suspected Biliary Problem in a Patient with Pneumonia
When a patient presents with symptoms of pneumonia, it is important to consider other potential underlying conditions. In this case, the patient’s blood tests suggest the possibility of cholecystitis or cholangitis, indicating a potential biliary problem. To confirm or exclude this diagnosis, an ultrasound scan of the abdomen is necessary. If the ultrasound rules out a biliary problem, the pneumonia remains the primary concern. A CT scan of the chest is not necessary at this point since the pneumonia has already been diagnosed. Blood cultures and sputum samples can help identify the organism causing the infection, but they do not confirm the overall diagnosis. Additionally, serum haptoglobin is not a reliable test for confirming haemolysis caused by mycoplasma pneumonia. Overall, a thorough diagnostic approach is necessary to accurately identify and treat the underlying condition in a patient with suspected pneumonia and potential biliary problems.
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This question is part of the following fields:
- Gastroenterology
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Question 6
Correct
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A 28-year-old woman presents with complaints of intermittent abdominal distension and bloating. She experiences bouts of loose motions that provide relief from the symptoms. There is no history of rectal bleeding or weight loss. The patient works as a manager in a busy office and finds work to be stressful. She has previously taken a course of fluoxetine for depression/anxiety. Abdominal examination is unremarkable.
What is the probable diagnosis?Your Answer: Irritable bowel syndrome (IBS)
Explanation:IBS is a chronic condition that affects bowel function, but its cause is unknown. To diagnose IBS, patients must have experienced abdominal pain or discomfort for at least 3 months, along with two or more of the following symptoms: relief after defecation, changes in stool frequency or appearance, and abdominal bloating. Other symptoms may include altered stool passage, mucorrhoea, and headaches. Blood tests are recommended to rule out other conditions, and further investigation is not necessary unless symptoms of organic disease are present. Diverticulitis, anxiety disorder, Crohn’s disease, and ulcerative colitis are all conditions that can be ruled out based on the absence of certain symptoms.
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This question is part of the following fields:
- Gastroenterology
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Question 7
Incorrect
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A 45-year-old alcoholic presents to the Emergency Department with retrosternal chest pain, shortness of breath and pain on swallowing after a heavy drinking session the night before. He reports having vomited several times this morning, after which the pain started. He denies any blood in the vomit and has no melaena. On examination, he is febrile and tachypnoeic and has a heart rate of 110 bpm. A chest X-ray reveals a left-sided pneumothorax and air within the mediastinum.
Given the likely diagnosis, what is the most appropriate management to treat the underlying cause of his symptoms?Your Answer: Urgent endoscopy
Correct Answer: Urgent surgery
Explanation:Management of Suspected Oesophageal Rupture
Suspected oesophageal rupture is a medical emergency that requires urgent intervention. This condition is more common in patients with a history of alcohol excess and can be associated with a triad of vomiting, chest pain, and subcutaneous emphysema. Symptoms include retrosternal chest/epigastric pain, tachypnoea, fever, pain on swallowing, and shock. A chest X-ray reveals gas within soft tissue spaces, pneumomediastinum, left pleural effusion, and left-sided pneumothorax. Without rapid treatment, the condition can be fatal.
Antibiotics are necessary to treat the infection that may result from oesophageal rupture. However, they will not address the underlying cause of the infection.
Chest drain insertion is not the correct management for pneumothorax secondary to oesophageal rupture. A chest drain would not resolve the underlying cause, and air would continue to enter the pleural cavity via the oesophagus.
Proton pump inhibitors (PPIs) are not appropriate for suspected oesophageal rupture. PPIs would be the correct management for a suspected perforated ulcer. However, the history of acute-onset pain following vomiting is more in keeping with oesophageal rupture.
Urgent endoscopy is not appropriate for suspected oesophageal rupture. Endoscopy risks further oesophageal perforation, and there is no report of haematemesis or melaena, making this a less likely cause of the patient’s symptoms.
Management of Suspected Oesophageal Rupture: Antibiotics, Chest Drain Insertion, PPIs, and Endoscopy
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This question is part of the following fields:
- Gastroenterology
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Question 8
Incorrect
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A 52-year-old male taxi driver presented with altered consciousness. He was discovered on the roadside in this state and brought to the Emergency Department. He had a strong smell of alcohol and was also found to be icteric. Ascites and gynaecomastia were clinically present. The following morning during examination, he was lying still in bed without interest in his surroundings. He was able to report his name and occupation promptly but continued to insist that it was midnight. He was cooperative during physical examination, but once the attending doctor pressed his abdomen, he swore loudly, despite being known as a generally gentle person. What is the grading of hepatic encephalopathy for this patient?
Your Answer: 3
Correct Answer: 2
Explanation:Understanding the West Haven Criteria for Hepatic Encephalopathy
The West Haven Criteria is a scoring system used to assess the severity of hepatic encephalopathy, a condition where the liver is unable to remove toxins from the blood, leading to brain dysfunction. The criteria range from 0 to 4, with higher scores indicating more severe symptoms.
A score of 0 indicates normal mental status with minimal changes in memory, concentration, intellectual function, and coordination. This is also known as minimal hepatic encephalopathy.
A score of 1 indicates mild confusion, euphoria or depression, decreased attention, slowing of mental tasks, irritability, and sleep pattern disorders such as an inverted sleep cycle.
A score of 2 indicates drowsiness, lethargy, gross deficits in mental tasks, personality changes, inappropriate behavior, and intermittent disorientation.
A score of 3 presents with somnolence but rousability, inability to perform mental tasks, disorientation to time and place, marked confusion, amnesia, occasional fits of rage, and speech that is present but incomprehensible.
A score of 4 indicates coma with or without response to painful stimuli.
Understanding the West Haven Criteria is important in diagnosing and managing hepatic encephalopathy, as it helps healthcare professionals determine the severity of the condition and develop appropriate treatment plans.
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This question is part of the following fields:
- Gastroenterology
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Question 9
Correct
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A 45-year-old man presents with abnormal liver function tests. He reports being a teetotaler and having no risk factors for liver disease. However, his grandfather passed away from liver cancer. Upon investigation, his serum albumin is 38 g/L (37-49), serum total bilirubin is 41 μmol/L (1-22), serum alanine aminotransferase is 105 U/L (5-35), serum alkaline phosphatase is 115 U/L (45-105), serum ferritin is 1360 μg/L (15-300), and serum iron saturation is 84%. What is the likely diagnosis?
Your Answer: Haemochromatosis
Explanation:Differentiating Hereditary Haemochromatosis from Other Liver Diseases
Raised serum ferritin levels and increased transferrin saturation, with or without abnormal liver function tests, are indicative of hereditary haemochromatosis. On the other hand, abnormal serum ferritin and iron saturation are not observed in alpha-1 antitrypsin deficiency. Diagnosis of the latter involves measuring serum alpha-1 antitrypsin levels and pi-typing for mutant alleles.
In primary biliary cirrhosis (PBC), liver function abnormalities follow a cholestatic pattern, and it typically affects middle-aged females. However, serum ferritin and iron studies are normal in PBC. Primary sclerosing cholangitis (PSC) is characterized by a disproportionate elevation (4-10 times normal) in serum alkaline phosphatase, and patients with PSC usually have a history of inflammatory bowel disease.
Finally, Wilson’s disease is a condition that primarily affects young people, usually in their second or third decade of life. It is rare for Wilson’s disease to manifest after the age of 40. By the unique characteristics of each liver disease, healthcare professionals can make an accurate diagnosis and provide appropriate treatment.
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This question is part of the following fields:
- Gastroenterology
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Question 10
Incorrect
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A 32-year-old man presents at the outpatient clinic with altered bowel habit and occasional per rectum bleeding for the past 3 months. During examination, he experiences tenderness on the left iliac fossa and is unable to tolerate a pr examination. His liver function tests at the general practice surgery showed an elevated alkaline phosphatase (ALP) level. Based on these symptoms, which of the following autoantibody screen findings is most likely?
Your Answer: Raised anti-mitochondrial antibody (AMA)
Correct Answer: Raised anti-smooth muscle antibody (ASMA)
Explanation:Interpreting Autoantibody Results in a Patient with Abnormal Liver Function Tests and Colitis-like Symptoms
The patient in question presents with abnormal liver function tests and colitis-like symptoms, including bloody stools and tenderness in the left iliac fossa. The following autoantibody results were obtained:
– Raised anti-smooth muscle antibody (ASMA): This suggests the possibility of inflammatory bowel disease, particularly ulcerative colitis (UC), which is strongly associated with primary sclerosing cholangitis (PSC). PSC is characterized by immunologically mediated inflammation of the bile ducts, leading to obstruction and a cholestatic pattern of liver dysfunction. ASMA and p-ANCA are often elevated in PSC, and an isolated rise in alkaline phosphatase (ALP) is common.
– Raised anti-mitochondrial antibody (AMA): This enzyme is typically detected in primary biliary cholangitis (PBC), which causes destruction of the intrahepatic bile ducts and a cholestatic pattern of jaundice. However, given the patient’s gender and coexisting UC, PBC is less likely than PSC as a cause of the elevated ALP.
– Raised anti-endomysial antibody: This is associated with coeliac disease, which can cause chronic inflammation of the small intestine and malabsorption. However, the patient’s symptoms do not strongly suggest this diagnosis.
– Negative result for systemic lupus erythematosus (SLE) antibodies: SLE is not clinically suspected based on the patient’s history.
– Raised anti-Jo antibody: This is associated with polymyositis and dermatomyositis, which are not suspected in this patient.In summary, the patient’s autoantibody results suggest a possible diagnosis of PSC in the context of UC and liver dysfunction. Further imaging studies, such as ERCP or MRCP, may be necessary to confirm this diagnosis.
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This question is part of the following fields:
- Gastroenterology
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Question 11
Incorrect
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A 38-year-old traveller returns from a long period of travelling in Indonesia. He complains of persistent fever and night sweats, has lost weight and now feels a dull right upper quadrant pain. On further questioning, he admits to having lived very cheaply during his trip and to eating meat from street vendors that may have been undercooked. On examination, he is mildly jaundiced.
Bloods:
Investigation Result Normal value
Bilirubin 98 μmol/l 2–17 µmol/l
Alanine aminotransferase (ALT) 57 IU/l 5–30 IU/l
Alkaline phosphatase 186 IU/l 30–130 IU/l
Haemoglobin 112g/l 135–175 g/l
White cell count (WCC) 12.1 × 109/l 4–11 × 109/l
Platelets 165 × 109/l 150–400 × 109/l
Erythrocyte sedimentation rate (ESR) 55 mm/hour 0–10mm in the 1st hour
An abdominal ultrasound scan shows a cystic mass within the right lobe of the liver.
Which of the following represents the most effective treatment for this man?Your Answer: Metronidazole orally (po)
Correct Answer: Drainage and albendazole po
Explanation:Treatment Options for Liver Cysts: Hydatid Disease and Amoebic Liver Abscess
Hydatid disease is a parasitic infection that can occur from consuming undercooked meat sold by street vendors. The majority of cysts occur in the liver, with the remaining cysts isolated to other areas of the body. The preferred treatment is drainage, either surgically or radiologically, along with the use of albendazole to reduce the risk of recurrence. Amoebic liver abscess is a potential differential diagnosis, but ultrasound findings can differentiate between the two. Metronidazole is used to manage amoebic liver cysts, while cefuroxime is used for pyogenic bacterial liver abscess. Definitive management for hydatid disease requires drainage of fluid. For amoebic liver abscess, metronidazole with or without drainage under ultrasound is the preferred treatment.
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This question is part of the following fields:
- Gastroenterology
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Question 12
Correct
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A 21-year-old anatomy student presents with diarrhoea and weight loss. The patient complains of increased frequency of loose motions associated with cramping abdominal pain for six weeks, with an accompanying 5 kg weight loss. He opens his bowels anywhere from three to six times daily, the stool frequently has mucous in it, but no blood. The patient has no recent history of foreign travel and has had no ill contacts. He is a non-smoker and does not drink alcohol. The patient is referred to Gastroenterology for further investigation. A colonoscopy and biopsy of an affected area of bowel reveals ulcerative colitis.
Which of the following is an extra-intestinal clinical feature associated with inflammatory bowel disease?Your Answer: Sacroiliitis
Explanation:Extraintestinal Clinical Features Associated with IBD
Inflammatory bowel disease (IBD) is often accompanied by joint pain and inflammation, with migratory polyarthritis and sacroiliitis being common arthritic conditions. Other extraintestinal clinical features associated with IBD include aphthous ulcers, anterior uveitis, conjunctivitis, episcleritis, pyoderma gangrenosum, erythema nodosum, erythema multiforme, finger clubbing, primary sclerosing cholangitis, and fissures. However, aortic aneurysm is not known to be associated with IBD, as it is commonly linked to Marfan syndrome, Ehlers-Danlos syndrome, and collagen-vascular diseases. While peripheral arthropathy of the hands is associated with IBD, it is typically asymmetrical and non-deforming. Deforming arthropathy of the hands is more commonly associated with psoriatic arthritis and rheumatoid arthritis. Heberden’s nodes and Bouchard’s nodes, bony distal and proximal interphalangeal joint nodes, are found in osteoarthritis and are not associated with IBD. Prostatitis, a bacterial infection of the prostate gland, is not associated with IBD and is typically caused by Chlamydia or gonorrhoeae in young, sexually active men, and Escherichia coli in older men.
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This question is part of the following fields:
- Gastroenterology
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Question 13
Incorrect
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A 44-year-old woman is scheduled for splenectomy due to an enlarged spleen. The consultant advises the registrar to locate the tail of the pancreas during the procedure to prevent postoperative pancreatic fistula. Where should the tail of the pancreas be identified during the splenectomy?
Your Answer: Gastrosplenic ligament
Correct Answer: Splenorenal ligament
Explanation:Peritoneal Structures Connecting Abdominal Organs
The human body has several peritoneal structures that connect abdominal organs to each other or to the posterior abdominal wall. These structures play an important role in maintaining the position and stability of the organs. Here are some examples:
1. Splenorenal Ligament: This ligament connects the spleen to the posterior abdominal wall over the left kidney. It also contains the tail of the pancreas.
2. Gastrosplenic Ligament: This ligament connects the greater curvature of the stomach with the hilum of the spleen.
3. Transverse Mesocolon: This structure connects the transverse colon to the posterior abdominal wall.
4. Gastrocolic Ligament: This ligament connects the greater curvature of the stomach with the transverse colon.
5. Phrenicocolic Ligament: This ligament connects the splenic flexure of the colon to the diaphragm.
These peritoneal structures are important for the proper functioning of the digestive system and for maintaining the position of the organs.
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This question is part of the following fields:
- Gastroenterology
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Question 14
Incorrect
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A 68-year-old man has come in with jaundice and no pain. His doctor has noted a possible palpable gallbladder. Where is the fundus of the gallbladder most likely to be palpable based on these symptoms?
Your Answer: Mid-clavicular line and a horizontal line through the umbilicus
Correct Answer: Lateral edge of right rectus abdominis muscle and the costal margin
Explanation:Anatomical Landmarks and their Surface Markings in the Abdomen
The human abdomen is a complex region with various structures and organs that are important for digestion and metabolism. In this article, we will discuss some of the anatomical landmarks and their surface markings in the abdomen.
Surface Marking: Lateral edge of right rectus abdominis muscle and the costal margin
Anatomical Landmark: Fundus of the gallbladderThe fundus of the gallbladder is located closest to the anterior abdominal wall. Its surface marking is the point where the lateral edge of the right rectus abdominis muscle meets the costal margin, which is also in the transpyloric plane. It is important to note that Courvoisier’s law exists in surgery, which states that a palpable, enlarged gallbladder accompanied by painless jaundice is unlikely to be caused by gallstone disease.
Surface Marking: Anterior axillary line and the transpyloric plane
Anatomical Landmark: Hilum of the spleenThe transpyloric plane is an imaginary line that runs axially approximately at the L1 vertebral body. The hilum of the spleen can be found at the intersection of the anterior axillary line and the transpyloric plane.
Surface Marking: Linea alba and the transpyloric plane
Anatomical Landmark: Origin of the superior mesenteric arteryThe origin of the superior mesenteric artery can be found at the intersection of the linea alba and the transpyloric plane.
Surface Marking: Mid-clavicular line and the transpyloric plane
Anatomical Landmark: Hepatic flexure of the colon on the right and splenic flexure of the colon on the leftAt the intersection of the mid-clavicular line and the transpyloric plane, the hepatic flexure of the colon can be found on the right and the splenic flexure of the colon on the left.
Surface Marking: Mid-clavicular line and a horizontal line through the umbilicus
Anatomical Landmark: Ascending colon on the right and descending colon on the leftAt the intersection of the mid-clavicular line and a horizontal line through the umbilicus, the ascending colon is found on the right and the descending colon on the left. If the liver or spleen are enlarged, their tips can also
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This question is part of the following fields:
- Gastroenterology
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Question 15
Correct
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A 67-year-old man visits his GP complaining of a mass on his tongue. He has a history of HIV that is not well-controlled, and he does not follow his medication regimen. During the examination, the doctor observes shaggy, poorly-defined, hardened, slightly raised, and rough plaques on the side of the tongue. The plaques cannot be removed with a tongue blade. What is the most probable diagnosis?
Your Answer: Oral hairy leukoplakia
Explanation:Oral Lesions: Differential Diagnosis and Characteristics
Oral lesions can present in a variety of forms and have different characteristics. In this case, a patient with a history of immunosuppression presents with a white mass on the lateral aspect of the tongue that cannot be scraped off with a tongue blade. This is most consistent with oral hairy leukoplakia, a non-premalignant Epstein-Barr virus-mediated mucocutaneous manifestation that often presents in immunosuppressed patients. Treatment involves antivirals.
Other possible oral lesions include oral discoid lupus erythematosus, which is the oral manifestation of systemic lupus erythematosus and typically presents as punched-out lesions with surrounding erythema. Aphthous ulcers are round or oval-shaped lesions with surrounding erythema that typically occur on the inside of the mouth and can be treated with topical steroids. Oral candidiasis can be scraped off with a tongue blade, making it an unlikely diagnosis in this case. Oral lichen planus is a chronic inflammatory condition that can present as white, lacy patches or erosions on the gingival margin.
In summary, a thorough examination and consideration of the patient’s medical history are necessary to accurately diagnose and treat oral lesions.
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This question is part of the following fields:
- Gastroenterology
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Question 16
Incorrect
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A 56-year-old man comes to the Emergency Department with haematemesis. His friends report that he drank a large amount of alcohol earlier and had prolonged vomiting because he is not used to drinking so much. During the examination, his vital signs are: pulse 110 bpm, blood pressure 100/60 mmHg. There are no notable findings during systemic examination.
What is the most likely cause of the haematemesis in this case?Your Answer: Barrett’s oesophagus
Correct Answer: Mallory-Weiss tear
Explanation:Causes of haematemesis and their associated symptoms
Haematemesis, or vomiting of blood, can be caused by various conditions affecting the upper gastrointestinal tract. Here we discuss some of the common causes and their associated symptoms.
Mallory-Weiss tear
This type of tear occurs at the junction between the oesophagus and the stomach, and is often due to severe vomiting or retching, especially in people with alcohol problems. The tear can cause internal bleeding and low blood pressure, and is usually accompanied by a history of recent vomiting.Peptic ulcer disease
Peptic ulcers are sores in the lining of the stomach or duodenum, and can cause epigastric pain, especially after eating or when hungry. Bleeding from a peptic ulcer is usually associated with these symptoms, and may be mild or severe.Oesophageal varices
Varices are enlarged veins in the oesophagus that can occur in people with chronic liver disease, especially due to alcohol abuse or viral hepatitis. Variceal bleeding can cause massive haematemesis and is a medical emergency.Barrett’s oesophagus
This condition is a type of metaplasia, or abnormal tissue growth, in the lower oesophagus, often due to chronic acid reflux. Although Barrett’s mucosa can lead to cancer, bleeding is not a common symptom.Gastritis
Gastritis is inflammation of the stomach lining, often due to NSAIDs or infection with Helicobacter pylori. It can cause epigastric pain, nausea, and vomiting, and may be associated with mild bleeding. Treatment usually involves acid suppression and eradication of H. pylori if present.In summary, haematemesis can be caused by various conditions affecting the upper digestive system, and the associated symptoms can help to narrow down the possible causes. Prompt medical attention is needed for severe or recurrent bleeding.
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This question is part of the following fields:
- Gastroenterology
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Question 17
Incorrect
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A 50-year-old man with a history of chronic active hepatitis B presents with abdominal distension and bilateral ankle oedema, worsening over the previous 2 weeks. Three months ago, he was admitted for bleeding oesophageal varices, which was treated endoscopically. There was shifting dullness without tenderness on abdominal examination, and splenomegaly was also noted. His serum albumin concentration was diminished. Prothrombin time was elevated.
Which one of the following diuretics will best help this patient?Your Answer: Furosemide
Correct Answer: Spironolactone
Explanation:Diuretics for Ascites in Liver Cirrhosis: Mechanisms and Options
Ascites is a common complication of liver cirrhosis, caused by both Na/water retention and portal hypertension. Spironolactone, an aldosterone antagonist, is the first-line diuretic for ascites in liver cirrhosis. It promotes natriuresis and diuresis, while also preventing hypokalaemia and subsequent hepatic encephalopathy. Furosemide, a loop diuretic, can be used as an adjunct or second-line therapy. Bumetanide and amiloride are alternatives, but less preferred. Acetazolamide and thiazide diuretics are not recommended. Common side-effects of diuretics include electrolyte imbalances and renal impairment. Careful monitoring is necessary to ensure safe and effective treatment.
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This question is part of the following fields:
- Gastroenterology
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Question 18
Incorrect
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A 42-year-old female patient complains of a slow onset of difficulty swallowing both solids and liquids. An upper GI endoscopy shows no abnormalities, and there is no visible swelling in the neck. A preliminary psychiatric evaluation reveals no issues. The on-call junior doctor suspects a psychological or functional cause. What signs would indicate an organic origin for the dysphagia?
Your Answer: Malar rash
Correct Answer: Raynaud's phenomenon
Explanation:The relationship between Raynaud’s phenomenon and dysphagia is important in identifying potential underlying systemic diseases such as scleroderma. Raynaud’s phenomenon is a common symptom found in scleroderma, a systemic disease that can cause dysphagia and oesophageal dysmotility. While Raynaud’s phenomenon may be the only early manifestation of scleroderma, gastrointestinal involvement can also occur in the early stages. Therefore, the combination of Raynaud’s phenomenon with oesophageal symptoms should prompt further investigation for scleroderma.
Arthritis is not a specific cause of dysphagia-related illness, although it may occur in a variety of diseases. In scleroderma, arthralgia is more common than arthritis. Globus pharyngeus, the sensation of having something stuck in the throat, can cause severe distress, but despite extensive investigation, there is no known cause. Malar rash, found in systemic lupus erythematosus (SLE), is not associated with dysphagia. Weakness is a non-specific symptom that may be a manifestation of psychiatric illness or malnutrition as a consequence of dysphagia, and cannot guide further management.
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This question is part of the following fields:
- Gastroenterology
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Question 19
Incorrect
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A 40-year-old man returns from a trip to Thailand and experiences fatigue, malaise, loss of appetite, and jaundice. He has no significant medical history and denies excessive alcohol consumption. Upon investigation, his serum total bilirubin is 71 μmol/L (1-22), serum alanine aminotransferase is 195 U/L (5-35), and serum alkaline phosphatase is 100 U/L (45-105). His serum IgM antihepatitis A is negative, but serum IgG antihepatitis A is positive. Additionally, his serum hepatitis B surface antigen (HBsAg) is positive, but serum antibody to hepatitis C is negative. What is the most likely diagnosis?
Your Answer: Acute hepatitis A
Correct Answer: Acute hepatitis B
Explanation:Diagnosis of Hepatitis and Leptospirosis
Hepatitis B is a sexually transmitted disease that can be diagnosed by the presence of HBsAg and IgM anti-HBc antibodies. On the other hand, acute hepatitis A can be diagnosed by positive IgM anti-HAV antibodies, while the presence of IgG anti-HAV antibodies indicates that the illness is not caused by HAV. Acute hepatitis C is usually asymptomatic, but can be diagnosed through the demonstration of anti-HCV antibodies or HCV RNA. Meanwhile, acute hepatitis E is characterized by a more pronounced elevation of alkaline phosphatase and can be diagnosed through the presence of serum IgM anti-HEV antibodies.
Leptospirosis, also known as Weil’s disease, is caused by the spirochaete Leptospira and can cause acute hepatitis. It is transmitted through direct contact with infected soil, water, or urine, and can enter the body through skin abrasions or cuts. Diagnosis of leptospirosis is done through an enzyme-linked immunosorbent assay (ELISA) test for Leptospira IgM antibodies.
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This question is part of the following fields:
- Gastroenterology
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Question 20
Incorrect
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A 35-year-old woman presents to the Gastroenterology Clinic with a history of intermittent dysphagia to both solids and liquids for the past 6 months. She reports that food often gets stuck during meals and she has to drink a lot of water to overcome this. The doctor orders a chest X-ray and barium swallow, which reveal a dilated oesophagus, lack of peristalsis, and bird-beak deformity.
What diagnosis is consistent with these symptoms and test results?Your Answer: Diffuse oesophageal spasm
Correct Answer: Achalasia
Explanation:Achalasia is a condition where the lower oesophageal sphincter fails to relax during swallowing, causing difficulty in swallowing both solids and liquids. The cause is often unknown, and diagnosis involves various tests such as chest X-ray, barium swallow, oesophagoscopy, CT scan, and manometry. Treatment options include sphincter dilation using Botox or balloon dilation, and surgery if necessary. Oesophageal web is a thin membrane in the oesophagus that can cause dysphagia to solids and reflux symptoms. Chagas’ disease, scleroderma, and diffuse oesophageal spasm are other conditions that can cause similar symptoms but have different causes and treatments.
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This question is part of the following fields:
- Gastroenterology
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Question 21
Incorrect
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A 70-year-old man presents to his GP with a complaint of difficulty swallowing that has been occurring for the past four weeks. He reports that solid foods are particularly problematic and feel as though they are getting stuck. The patient has a medical history of hypertension and osteoarthritis of the knees, for which he takes amlodipine 5 mg OD and paracetamol 1 g as required respectively. He has a 20-pack year smoking history but does not consume alcohol. On examination, the patient appears well at rest and has a normal body habitus. Abdominal examination is largely unremarkable, except for some mild epigastric discomfort. What is the most appropriate next step in management?
Your Answer: Emergency hospital admission
Correct Answer: Refer to gastroenterology for OGD (oesophago-gastro-duodenoscopy) under the 2-week wait criteria
Explanation:Recognizing Red Flags for Oesophageal Cancer: Referring for OGD under the 2-Week Wait Criteria
When a patient presents with subacute and first-onset dysphagia limited to solids, it suggests a new mass obstructing the oesophagus. This symptom is a red flag for oesophageal cancer, and a 2-week wait referral for OGD is necessary to prevent a delay in diagnosis. If abnormal tissue is found during the OGD, biopsies will be taken for histological analysis to confirm the diagnosis.
PPI therapy and review in a month is not appropriate for dysphagia, as it may delay a potential cancer diagnosis. Emergency hospital admission is unnecessary, as the patient is not acutely unstable. Routine outpatient gastrointestinal appointment is appropriate, but it must be performed within two weeks in accordance with the UK’s referral guidelines for potential cancer diagnoses. Acute specialist care of the elderly clinic referral is not necessary, as the patient’s age alone does not indicate a need for geriatric care.
It is important to explain to the patient that while cancer is a possibility, there may be other explanations as well. Encouraging a step-by-step approach and informing the patient that the specialist who conducts the OGD will explain things in more detail when consenting them for the procedure is appropriate. The full criteria for a 2-week wait referral for OGD includes new-onset dysphagia at any age, and additional criteria for patients over 55 years old with weight loss, epigastric abdominal pain, dyspepsia, reflux, or a history of Barrett’s oesophagus.
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This question is part of the following fields:
- Gastroenterology
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Question 22
Incorrect
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A 56-year-old woman presents to her General Practitioner (GP) after experiencing ‘indigestion’ for the past six months. She has been using over-the-counter treatments without relief. She reports a burning-type sensation in her epigastric region which is present most of the time. Over the past four months, she has lost approximately 4 kg in weight. She denies dysphagia, melaena, nausea, or vomiting.
Upon examination, her abdomen is soft and non-tender without palpable masses.
What is the next step in managing her symptoms?Your Answer: Helicobacter faecal antigen stool test and treatment if positive
Correct Answer: Refer urgently as a suspected gastro-oesophageal cancer to be seen in two weeks
Explanation:Appropriate Management of Suspected Gastro-Oesophageal Malignancy
Suspected gastro-oesophageal malignancy requires urgent referral, according to NICE guidelines. A patient’s age, weight loss, and dyspepsia symptoms meet the criteria for referral. An ultrasound of the abdomen may be useful to rule out biliary disease, but it would not be helpful in assessing oesophageal or stomach pathology. Treatment with proton pump inhibitors may mask malignancy signs and delay diagnosis. Helicobacter testing can be useful for dyspepsia patients, but red flag symptoms require urgent malignancy ruling out. A barium swallow is not a gold-standard test for gastro-oesophageal malignancy.
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This question is part of the following fields:
- Gastroenterology
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Question 23
Incorrect
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A 50-year-old woman presents to the Gastroenterology Clinic with constipation that has worsened over the past six weeks. She reports straining during defecation. She has a feeling of incomplete evacuation. She has two children who were born via vaginal delivery without history of tears. She has had bladder suspension surgery. On examination, her abdomen is soft and non-distended without palpable masses.
On digital rectal examination, she has an empty rectum. Her resting anal tone is weak but her squeeze tone is normal. She does not relax the puborectalis muscle or the external anal sphincter when simulating defecation; she also has 4-cm perineal descent with straining.
What is the most appropriate investigation to carry out next?Your Answer: Abdominal ultrasound
Correct Answer: Magnetic resonance defecography
Explanation:Magnetic resonance defecography is the most appropriate investigation for a patient with abnormal pelvic floor muscle tone, perineal descent, and symptoms of incomplete evacuation during defecation. This test evaluates global pelvic floor anatomy and dynamic motion, identifying prolapse, rectocele, and pelvic floor dysfunctions. Other tests, such as abdominal ultrasound, barium enema, colonoscopy, and CT abdomen, may not provide sufficient information on the underlying pathology of the patient’s symptoms.
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This question is part of the following fields:
- Gastroenterology
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Question 24
Incorrect
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A 42-year-old man comes in after being found unconscious. He smells strongly of alcohol.
When considering withdrawal from this substance, which of the following statements is correct?Your Answer: Visual hallucinations suggest a coexisting psychiatric disorder
Correct Answer: Hypophosphataemia is commonly seen
Explanation:Misconceptions about Alcohol Withdrawal: Debunked
Alcohol withdrawal is a common condition that can lead to serious complications if not managed properly. However, there are several misconceptions about alcohol withdrawal that can lead to inappropriate treatment and poor outcomes. Let’s debunk some of these misconceptions:
1. Hypophosphataemia is commonly seen: This is true. Hypophosphataemia is a common electrolyte abnormality in alcohol withdrawal due to malnutrition.
2. Visual hallucinations suggest a coexisting psychiatric disorder: This is false. Visual hallucinations in alcohol withdrawal are usually related to alcohol withdrawal and not necessarily a coexisting psychiatric disorder.
3. Flumazenil is routinely used as part of the detoxification process: This is false. Flumazenil is not routinely used in alcohol detoxification but may be useful in benzodiazepine overdose.
4. Seizures are rare: This is false. Seizures in alcohol withdrawal are common and can lead to serious complications if not managed properly.
5. All patients who have a seizure should be started on an antiepileptic: This is false. Withdrawal seizures generally do not require antiepileptic treatment and may even increase the risk of further seizures and other medical problems.
In summary, it is important to understand the true nature of alcohol withdrawal and its associated complications to provide appropriate and effective treatment.
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This question is part of the following fields:
- Gastroenterology
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Question 25
Correct
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A 56-year-old patient with a history of alcoholism is admitted to the emergency department after experiencing acute haematemesis. During emergency endoscopy, bleeding oesophageal varices are discovered and treated with banding. The patient's hospital stay is uneventful, and they are ready for discharge after 10 days. What medication would be the most appropriate prophylactic agent to prevent the patient from experiencing further variceal bleeding?
Your Answer: Propranolol
Explanation:Portal Hypertension and Varices in Alcoholic Cirrhosis
The portal vein is responsible for carrying blood from the gut and spleen to the liver. In cases of alcoholic cirrhosis, this flow can become obstructed, leading to increased pressure and the need for blood to find alternative routes. This often results in the development of porto-systemic collaterals, with the gastro-oesophageal junction being the most common site. As a result, patients with alcoholic cirrhosis often present with varices, which are superficial and prone to rupture, causing acute and massive haematemesis.
To prevent rebleeding and reduce portal pressures, beta blockers such as propranolol have been found to be the most effective treatment for portal hypertension. Propranolol is licensed for this purpose and can help manage the complications associated with varices in alcoholic cirrhosis.
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This question is part of the following fields:
- Gastroenterology
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Question 26
Incorrect
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A 16-year-old previously healthy woman presents with a 10-month history of persistent non-bloody diarrhoea and central abdominal pain. She also gives a history of unintentional weight loss. The patient is not yet menstruating. On examination, she has slight conjunctival pallor. Blood tests reveal a macrocytic anaemia.
What is the likeliest diagnosis?Your Answer: Carcinoid syndrome
Correct Answer: Coeliac disease
Explanation:Coeliac disease is a condition where the lining of the small intestine is abnormal and improves when gluten is removed from the diet. It is caused by an immune response to a component of gluten called α-gliadin peptide. Symptoms can occur at any age but are most common in infancy and in adults in their 40s. Symptoms include abdominal pain, bloating, diarrhea, delayed puberty, and anemia. Blood tests are used to diagnose the disease, and a biopsy of the small intestine can confirm the diagnosis. Treatment involves avoiding gluten in the diet. Crohn’s disease and ulcerative colitis have different symptoms, while irritable bowel syndrome and carcinoid syndrome are unlikely in this case.
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This question is part of the following fields:
- Gastroenterology
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Question 27
Incorrect
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A 20-year old man presents to the Surgical Assessment Unit complaining of sudden onset abdominal pain. What physical examination finding is most indicative of a possible diagnosis of appendicitis?
Your Answer: Tinkling bowel sounds
Correct Answer: Tenderness over McBurney’s point
Explanation:Common Abdominal Exam Findings and Their Significance
Abdominal exams are an important part of diagnosing various medical conditions. Here are some common findings and their significance:
Tenderness over McBurney’s point: This is a sign of possible appendicitis. McBurney’s point is located a third of the way from the right anterior superior iliac spine to the umbilicus.
Grey–Turner’s sign: Flank bruising is a sign of retroperitoneal hemorrhage, which is commonly associated with acute pancreatitis.
Murphy’s sign: This suggests cholecystitis. The examiner places their hand below the right costal margin and the tender gallbladder moves inferiorly on inhalation, causing the patient to catch their breath.
Tinkling bowel sounds: High-pitched, ‘tinkling’ bowel sounds are typically associated with mechanical bowel obstruction.
Absent bowel sounds: This is suggestive of paralytic ileus, which most commonly occurs after abdominal surgery.
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This question is part of the following fields:
- Gastroenterology
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Question 28
Incorrect
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A 75-year-old widower comes to the Emergency Department following a mechanical fall at a nearby store. His orthopaedic examination is normal, but he is extremely thin and agitated, has halitosis and gingivitis, and perifollicular hemorrhages are visible.
What is the most probable diagnosis?Your Answer: Lead poisoning
Correct Answer: Vitamin C deficiency
Explanation:Differential diagnosis of a patient with muscle pain, fatigue, skin dots, bleeding gums, and weight loss
Scurvy, a rare condition in the general population, is a relatively common nutritional finding in the elderly and socially disadvantaged groups. It results from a deficiency of vitamin C, which is needed to make collagen. Without vitamin C, collagen cannot be replaced and tissue breaks down, leading to symptoms such as muscle and joint pain, fatigue, red dots on the skin (perifollicular haemorrhages), bleeding and inflammation of the gums (gingivitis), decreased wound healing, and easy bruising. Treatment involves vitamin C supplementation and dietary changes.
Lead poisoning, although not likely to cause the signs present in this patient, can cause abdominal pain, confusion, and headaches, and in severe cases, seizures, coma, and death. It is usually caused by exposure to lead in the environment, such as from contaminated water, soil, or paint.
Vitamin K deficiency, although rare, can cause bleeding and easy bruising, but it is much less common than vitamin C deficiency. Vitamin K is needed for blood clotting and bone health, and it is found in green leafy vegetables, liver, and eggs.
Hypothyroidism, a common endocrine disorder, is more likely to cause weight gain than weight loss, as it slows down the body’s metabolism. It can also cause dry, coarse skin, fatigue, and depression. Treatment involves thyroid hormone replacement therapy.
Pellagra, a rare condition caused by a deficiency of niacin (vitamin B3), can cause diarrhoea, dermatitis, and dementia. It may also cause aggression and red skin lesions, but it is less common than vitamin C deficiency. Treatment involves niacin supplementation and dietary changes.
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This question is part of the following fields:
- Gastroenterology
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Question 29
Correct
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A 67-year-old man presents with a complaint of passing small amounts of fresh red blood with his stool. He also reports a small amount of mucous discharge with his stool and feeling pruritic and sore around his anus for the past couple of days. The patient denies any pain but has been more constipated than usual over the past few months. He denies any recent weight loss and has a BMI of approximately 35. The patient has a history of hypercholesterolaemia and chronic obstructive pulmonary disease. He recently completed a 7-day course of amoxicillin for a lower respiratory tract infection 5 days ago. What is the most likely cause of his rectal bleeding?
Your Answer: Haemorrhoids
Explanation:Differential Diagnosis for Rectal Bleeding: Haemorrhoids, Colon Cancer, Diverticulitis, Anal Fissure, and Ulcerative Colitis
Rectal bleeding can be a concerning symptom for patients and healthcare providers alike. In this case, the patient has multiple risk factors for haemorrhoids, which are the most likely cause of his symptoms. However, it is important to consider other potential diagnoses, such as colon cancer, diverticulitis, anal fissure, and ulcerative colitis.
Haemorrhoids are caused by increased pressure in the blood vessels around the anus, which can be exacerbated by obesity, chronic constipation, and coughing. Symptoms include fresh red blood and mucous after passing stool, a pruritic anus, and soreness around the anus.
Colon cancer is less likely in this case, as it typically presents with a change in bowel habit and blood in the stool, but not with a pruritic, sore anus. However, if there is no evidence of haemorrhoids on examination, colonoscopy may be recommended to rule out cancer.
Diverticulitis is characterised by passing fresh, red blood per rectum, as well as nausea and vomiting, pyrexia, and abdominal pain.
Anal fissure also involves the passage of small amounts of fresh red blood with stools, but is associated with sharp anal pain when stools are passed.
Ulcerative colitis can be associated with passage of blood and mucous with stools, as well as weight loss, diarrhoea, anaemia, and fatigue. The patient has some risk factors for ulcerative colitis, which has two peak ages for diagnosis: 15-35 and 50-70 years old.
In summary, while haemorrhoids are the most likely cause of this patient’s symptoms, it is important to consider other potential diagnoses and perform appropriate testing to rule out more serious conditions.
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This question is part of the following fields:
- Gastroenterology
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Question 30
Incorrect
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A 26-year old woman has been asked to come in for a consultation at her GP's office after her blood test results showed an elevated level of anti-tissue transglutaminase antibody. What condition is linked to this antibody?
Your Answer:
Correct Answer: Coeliac disease
Explanation:Autoimmune Diseases: Causes and Symptoms
Autoimmune diseases are conditions where the body’s immune system attacks its own tissues and organs. Here are some examples of autoimmune diseases and their causes and symptoms:
Coeliac Disease
Coeliac disease is caused by an autoimmune reaction to gluten, a protein found in wheat. Symptoms include chronic diarrhoea, weight loss, and fatigue.Graves’ Disease
This autoimmune disease affects the thyroid gland, resulting in hyperthyroidism. It is associated with anti-thyroid-stimulating hormone (TSH) receptor antibodies.Pemphigus Vulgaris
This rare autoimmune disease causes blistering of the skin and mucosal surfaces due to autoantibodies against desmoglein.Systemic Lupus Erythematosus
This multisystem autoimmune disease is associated with a wide range of autoantibodies, including anti-nuclear antibody (ANA) and anti-double-stranded (ds) DNA. Symptoms can include joint pain, fatigue, and skin rashes.Type 1 Diabetes Mellitus
This autoimmune disease results in the destruction of islet cells in the pancreas. Islet cell autoantibodies and antibodies to insulin have been described as causes. Symptoms include increased thirst and urination, weight loss, and fatigue.In summary, autoimmune diseases can affect various organs and tissues in the body, and their symptoms can range from mild to severe. Understanding their causes and symptoms is crucial for early diagnosis and effective treatment.
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This question is part of the following fields:
- Gastroenterology
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