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Question 1
Incorrect
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A 42-year-old mechanic visits his GP complaining of intermittent jaundice that has been occurring for the past 5 months. He has been feeling fatigued lately and occasionally experiences mild itching on his arms. He denies any pain or weight loss. The patient has a history of ulcerative colitis, which was diagnosed 13 years ago and has been managed with mesalazine, anti-diarrhoeals, and steroids. The GP orders liver function tests, which reveal the following results:
total bilirubin 38 mmol/l
aspartate aminotransferase (AST) 32 iu/l
alanine aminotransferase (ALT) 34 iu/l
alkaline phosphatase 310 u/l.
What is the most probable diagnosis?Your Answer: Chronic cholecystitis
Correct Answer: Primary sclerosing cholangitis (PSC)
Explanation:Differential Diagnosis for Cholestatic Jaundice in a Patient with UC
Primary sclerosing cholangitis (PSC) is a condition that should be considered in a patient with UC who presents with a raised alkaline phosphatase level. This is because approximately two-thirds of patients with PSC also have coexisting UC, and between 3% and 8% of UC sufferers will develop PSC. Chronic cholecystitis would present with pain, which is not present in this patient, making PSC the more likely diagnosis. Acute cholecystitis would present with right upper quadrant pain and obstructive liver function tests, which are not present in this case. Primary biliary cholangitis is more likely to affect women aged 30-60, and given the patient’s history of UC, PSC is more likely. Pancreatic carcinoma would be associated with weight loss and obstructive liver function tests. Therefore, in a patient with UC presenting with cholestatic jaundice, PSC should be considered as a possible diagnosis.
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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 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 3
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A 50-year-old man presents to the Acute Medical Unit with complaints of mucous and bloody diarrhoea. He has experienced milder episodes intermittently over the past five years but has never sought medical attention. The patient reports left lower abdominal pain and occasional right hip pain. On examination, there is tenderness in the lower left abdominal region without radiation. The patient has not traveled outside the UK and has not been in contact with anyone with similar symptoms. There is no significant family history. What is the most probable diagnosis?
Your Answer: Ulcerative colitis
Explanation:Understanding Gastrointestinal Conditions: A Comparison of Ulcerative Colitis, Colon Carcinoma, Acute Diverticulitis, Crohn’s Disease, and Irritable Bowel Syndrome
Gastrointestinal conditions can be challenging to differentiate due to their overlapping symptoms. This article aims to provide a comparison of five common gastrointestinal conditions: ulcerative colitis, colon carcinoma, acute diverticulitis, Crohn’s disease, and irritable bowel syndrome.
Ulcerative colitis is a type of inflammatory bowel disease (IBD) that presents with bloody diarrhea as its main feature. Hip pain is also a common extra-intestinal manifestation in this condition.
Colon carcinoma, on the other hand, has an insidious onset and is characterized by weight loss, iron-deficiency anemia, and altered bowel habits. It is usually detected through screening tests such as FOBT, FIT, or flexible sigmoidoscopy.
Acute diverticulitis is a condition that affects older people and is caused by chronic pressure from constipation due to low dietary fiber consumption. It presents with abdominal pain and blood in the stool, but mucous is not a common feature.
Crohn’s disease is another type of IBD that presents with abdominal pain and diarrhea. However, bloody diarrhea is not common. Patients may also experience weight loss, fatigue, and extra-intestinal manifestations such as oral ulcers and perianal involvement.
Irritable bowel syndrome (IBS) is a gastrointestinal condition characterized by episodes of diarrhea and constipation, as well as flatulence and bloating. Abdominal pain is relieved upon opening the bowels and passing loose stools. IBS is different from IBD and is often associated with psychological factors such as depression and anxiety disorders.
In conclusion, understanding the differences between these gastrointestinal conditions is crucial for accurate diagnosis and appropriate management.
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This question is part of the following fields:
- Gastroenterology
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Question 4
Incorrect
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A 28-year-old woman with Crohn's disease (CD) visits her primary care physician for a regular follow-up. During the examination, the doctor observes clubbing, hepatomegaly, and episcleritis, which are known signs linked with CD. What other non-intestinal symptom is commonly associated with CD?
Your Answer: Palmar erythema
Correct Answer: Pyoderma gangrenosum
Explanation:Extra-Intestinal Manifestations and Skin Conditions Associated with Inflammatory Bowel Disease
Inflammatory bowel disease (IBD), including Crohn’s disease (CD) and ulcerative colitis (UC), can present with extra-intestinal manifestations, with some features being more prevalent in one than the other. Joint complications are the most common, but other manifestations include eye inflammation, joint pain and stiffness, and liver and biliary tree issues. Additionally, CD can present with skin conditions such as pyoderma gangrenosum, while UC is associated with primary sclerosing cholangitis and cholangiocarcinoma.
Other skin conditions, such as necrobiosis lipoidica and palmar erythema, are not associated with IBD. Erythema multiforme is a drug-related skin rash, while lichen planus is a skin rash of unknown cause that is not associated with IBD. It is important for healthcare providers to be aware of these extra-intestinal manifestations and skin conditions when evaluating patients with IBD.
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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 45-year-old man is admitted to Emergency Department (ED) with haematemesis of bright red blood. He is an alcoholic. He has cool extremities, guarding over the epigastric region, he is ascitic, and has eight spider naevi on his neck and chest. An ABCD management is begun along with fluid resuscitation.
Given the likely diagnosis, what medication is it most important to start?Your Answer: Terlipressin
Explanation:In cases of suspected variceal bleeding, the priority medication to administer is terlipressin. This drug causes constriction of the mesenteric arterial circulation, leading to a decrease in portal venous inflow and subsequent reduction in portal pressure, which can help to control bleeding. Band ligation should be performed after administering terlipressin, and if bleeding persists, a transjugular intrahepatic portosystemic shunt (TIPS) may be necessary. Antibiotics may also be given prophylactically, but they do not directly affect bleeding. Clopidogrel should be avoided as it can worsen bleeding, while omeprazole may be used according to hospital guidelines. Tranexamic acid is not indicated for oesophageal variceal bleeds.
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This question is part of the following fields:
- Gastroenterology
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Question 6
Incorrect
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A 26-year-old baker visits his GP with concerns about yellowing sclera that have developed over the past week. He has no significant medical history except for a recent viral infection that he has since recovered from. He drinks socially, consuming approximately 20 units per week, and has been in a four-year relationship with his girlfriend. His aunt's death from complications of Wilson's disease is a cause for concern, as her eyes also turned yellow before she became seriously ill. What is the most frequently linked outcome with Wilson's disease?
Your Answer: Low urinary copper
Correct Answer: Low ceruloplasmin
Explanation:Understanding Wilson’s Disease and Haemochromatosis: Key Diagnostic Markers
Wilson’s disease and haemochromatosis are two genetic conditions that can lead to serious health consequences if left untreated. Understanding the key diagnostic markers for each condition is crucial for early diagnosis and management.
Wilson’s disease is characterized by a build-up of copper in the body, resulting in liver disease and neuropsychiatric disease. Low ceruloplasmin and high urinary copper are typical markers of Wilson’s disease, along with the presence of Kayser-Fleischer rings. Definitive diagnosis is obtained via liver biopsy, and treatment aims at lifelong reduction of copper levels.
On the other hand, haemochromatosis results in iron overload and accumulation in different organs, leading to liver cirrhosis, cardiomyopathy, and other complications. High transferrin saturation and elevated serum ferritin are key diagnostic markers for haemochromatosis.
It is important to note that positive antinuclear antibody and positive antimitochondrial antibody are not diagnostic for Wilson’s disease or haemochromatosis, as they are associated with other autoimmune conditions. Early diagnosis and management of these conditions is crucial for reducing the risk of serious and potentially life-threatening consequences.
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This question is part of the following fields:
- Gastroenterology
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Question 7
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A 65-year-old man (with known metastatic pancreatic cancer) presented with severe obstructive jaundice and signs of hepatic encephalopathy. He was treated with a biliary stent (percutaneous transhepatic cholangiography (PTC)) and discharged when his jaundice, confusion and pruritus had started to improve. He re-presented shortly after discharge with rigors, pyrexia and feeling generally unwell. His blood cultures showed Gram-negative rods.
What is the most likely cause of his current presentation?Your Answer: Ascending cholangitis
Explanation:Possible Causes of Fever and Rigors in a Patient with a Biliary Stent
Introduction:
A patient with a biliary stent inserted via endoscopic retrograde cholangiopancreatography (ERCP) presents with fever and rigors. This article discusses the possible causes of these symptoms.Possible Causes:
1. Ascending Cholangitis: This is the most likely option as the patient’s biliary stent and the ERCP procedure are both well-known risk factors for acute cholangitis. The obstruction caused by the stent can lead to recurrent biliary sepsis, which can be life-threatening and requires prompt treatment with broad-spectrum antibiotics and IV fluids.2. Lower Respiratory Tract Infection: Sedation and endoscopy increase the risk of pulmonary infection, particularly aspiration. However, the biliary stent itself is the biggest risk factor, and the patient’s symptoms point towards ascending cholangitis.
3. Hepatitis: This is an unlikely cause of fever and rigors as there are no risk factors for common causes of acute hepatitis, and Gram-negative rods are not a common cause of hepatitis.
4. Metastatic Pancreatic Cancer: While this condition can increase the risk of infection due to immunocompromised, it does not fully explain the patient’s presentation as it would not cause frank fever and rigors.
5. Pyelonephritis: This bacterial infection of the kidney can cause pyrexia, rigors, and malaise, with Gram-negative rods, especially E. coli, as common causes. However, the recent biliary stent insertion puts this patient at high risk of ascending cholangitis.
Conclusion:
In conclusion, the most likely cause of fever and rigors in a patient with a biliary stent is ascending cholangitis. However, other possible causes should also be considered and ruled out through appropriate diagnostic tests. -
This question is part of the following fields:
- Gastroenterology
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Question 8
Correct
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A 61-year-old man comes to the Emergency Department complaining of sudden and severe abdominal pain that started an hour ago and worsens with movement. He has no significant medical or surgical history except for a recent prescription for rheumatoid arthritis. Upon examination, the patient is lying still, has a rapid heart rate, and an increased respiratory rate. The abdomen is extremely tender, and there is intense guarding.
What investigation is most suitable for this patient?Your Answer: Erect chest X-ray
Explanation:When a patient presents to the Emergency Department with an acute abdomen, an erect chest X-ray is urgently required. This inexpensive and non-invasive investigation can quickly provide important information, such as the presence of air under the diaphragm which may indicate a perforation requiring surgical intervention. However, if there is no air under the right hemidiaphragm but the history and examination suggest perforation, a CT scan of the abdomen may be necessary. NSAIDs, which are commonly used but can cause gastric and duodenal ulcers, should be given with a proton pump inhibitor if used for an extended period. Colonoscopy is generally used to investigate PR bleeding, change of bowel habit, or weight loss. An abdominal X-ray is not useful in this scenario, while an amylase level should be sent to assess for pancreatitis. Abdominal ultrasound is generally used to assess the biliary tree and gallbladder in acute cholecystitis or to assess trauma in a FAST scan.
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This question is part of the following fields:
- Gastroenterology
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Question 9
Incorrect
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A 40-year-old woman has been visiting her doctor frequently over the past year due to recurring episodes of abdominal cramps and diarrhoea. She is concerned about the possibility of bowel cancer, as her father passed away from it at the age of 86. She has no other relevant family history. She also mentions that she needs a refill for her salbutamol inhaler, which she takes for her recently diagnosed asthma. Additionally, she has noticed an increase in hot flashes and wonders if she is experiencing early menopause. She has lost some weight, which she attributes to her healthy diet. What is the most probable diagnosis?
Your Answer: Irritable bowel syndrome
Correct Answer: Gastrointestinal neuroendocrine tumour (NET)
Explanation:Diagnosis and Management of Gastrointestinal Neuroendocrine Tumour (NET)
A patient presenting with symptoms of diarrhoea, wheezing, and flushing may have a gastrointestinal neuroendocrine tumour (NET), also known as carcinoid syndrome. It is important to consider NET in the differential diagnosis, even in relatively young patients, as the average delay in diagnosis is 2-3 years.
Appropriate investigations include routine blood tests, gut hormone measurement, 24-hour urinary 5-hydroxyindoleacetic acid (5-HIAA) measurement, cross-sectional imaging, and gastrointestinal endoscopy. Management options include somatostatin analogues, peptide receptor radiotargeted therapy (PRRT), and molecularly targeted treatments such as sunitinib or everolimus.
Health/illness-related anxiety, or hypochondriasis, should be a diagnosis of exclusion, and physical causes should be addressed first. Irritable bowel syndrome may cause similar symptoms, but without hot flashes or asthma. Colorectal or gastric adenocarcinoma may also be considered, but the symptoms are more consistent with a NET.
Most gastrointestinal NETs are low grade, and even in metastatic disease, the median overall survival is around 10 years. Early diagnosis and appropriate management can improve outcomes for patients with NET.
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This question is part of the following fields:
- Gastroenterology
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Question 10
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A 35-year-old stockbroker has been experiencing difficulty swallowing solids for the past few months, while having no trouble swallowing liquids. He does not smoke and denies any alcohol consumption. His medical history is unremarkable except for the fact that he has been using antacids and H2-receptor blockers for gastro-oesophageal reflux disease for the past 5 years, with little relief from symptoms. Upon examination, there are no notable findings.
What is the probable reason for this man's dysphagia?Your Answer: Benign oesophageal stricture
Explanation:Causes of dysphagia: differential diagnosis based on patient history
Dysphagia, or difficulty swallowing, can have various causes, including structural abnormalities, functional disorders, and neoplastic conditions. Based on the patient’s history, several possibilities can be considered. For example, a benign oesophageal stricture may develop in patients with acid gastro-oesophageal reflux disease and can be treated with endoscopic dilation and reflux management. Diffuse oesophageal spasm, on the other hand, may cause dysphagia for both solids and liquids and be accompanied by chest pain. A lower oesophageal web can produce episodic dysphagia when food gets stuck in the distal oesophagus. Oesophageal squamous carcinoma is less likely in a young non-smoking patient, but should not be ruled out entirely. Scleroderma, a connective tissue disorder, may also cause dysphagia along with Raynaud’s phenomenon and skin changes. Therefore, a thorough evaluation and appropriate diagnostic tests are necessary to determine the underlying cause of dysphagia and guide the treatment plan.
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This question is part of the following fields:
- Gastroenterology
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