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Question 1
Incorrect
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A 35-year-old woman was brought to the Emergency Department with confusion. She has a history of manic illness. There is no evidence of alcohol or drug abuse. Upon examination, she displays mild jaundice and signs of chronic liver disease, such as spider naevi and palmar erythema. Additionally, there is a brownish ring discoloration at the limbus of the cornea.
Blood tests reveal:
Investigation Result Normal value
Bilirubin 130 μmol/l 2–17 µmol/l
Alanine aminotransferase (ALT) 85 IU/l 5–30 IU/l
Ferritin 100 μg/l 10–120 µg/l
What is the most likely diagnosis based on this clinical presentation?Your Answer: Haemochromatosis
Correct Answer: Wilson’s disease
Explanation:Differential diagnosis of a patient with liver disease and neurological symptoms
Wilson’s disease, haemochromatosis, alcohol-related cirrhosis, viral hepatitis, and primary sclerosing cholangitis are among the possible causes of liver disease. In the case of a patient with Kayser-Fleischer rings, the likelihood of Wilson’s disease increases, as this is a characteristic sign of copper overload due to defective incorporation of copper and caeruloplasmin. Neurological symptoms such as disinhibition, emotional lability, and chorea may also suggest Wilson’s disease, although they are not specific to it. Haemochromatosis, which is characterized by iron overload, can be ruled out if the ferritin level is normal. Alcohol-related cirrhosis is less likely if the patient denies alcohol or drug abuse, but this information may not always be reliable. Viral hepatitis is a common cause of liver disease, but in this case, there are no obvious risk factors in the history. Primary sclerosing cholangitis, which is a chronic inflammatory disease of the bile ducts, does not present with Kayser-Fleischer rings. Therefore, a careful evaluation of the patient’s clinical features, laboratory tests, and imaging studies is necessary to establish the correct diagnosis and guide the appropriate treatment.
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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 32-year-old man presents for a general check-up. He is well in himself and reports no symptoms.
On examination, he has a body mass index (BMI) of 33 kg/m2 and there are some thickened folds of skin in his axilla and the nape of his neck. His blood pressure is 140/90 mmHg. He is a non-smoker and does not drink.
A set of blood work is ordered. He demonstrated impaired fasting glucose in addition to the results below.
Investigation Result Normal value
Haemoglobin (Hb) 140 g/l 135–175 g/l
Cholesterol 5.8 mmol/l < 5.2 mmol/l
Triglyceride 3.9 mmol/l 0–1.5 mmol/l
Alanine aminotransferase (ALT) 60 IU/l 5–30 IU/l
Aspartate aminotransferase (AST) 30 IU/l 10–40 IU/l
Gamma-glutamyl transferase (GGT) 30 IU/l 5–30 IU/l
What is the next best investigation?Your Answer: Ultrasound liver
Explanation:Choosing the Best Investigation: A Case Study
In this case study, a patient presents with non-alcoholic fatty liver disease (NAFLD), raised ALT, impaired glucose regulation, acanthosis nigricans, and a high BMI. The question is, what investigation should be done next?
Ultrasound liver is the best investigation in this case. It is quick, inexpensive, and can provide enough information to guide management at initial stages. Weight management and dietary modification can help abate symptoms.
Screening for hereditary haemochromatosis is not appropriate in this case, as the patient does not complain of arthritis, diabetes, or changes to the skin.
Haematinics are not necessary, as the Hb is normal.
A CT scan of the abdomen would be useful, but it is costly and would result in the patient receiving radiation. It should not be the next best investigation.
Serum ceruloplasmin is not necessary, as there is nothing in the history to suggest Wilson’s disease.
In conclusion, choosing the best investigation requires careful consideration of the patient’s history and symptoms. In this case, ultrasound liver is the most appropriate next step.
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This question is part of the following fields:
- Gastroenterology
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Question 3
Incorrect
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A 70-year-old female complains of abdominal pain and melaena. She has a medical history of hypertension, type 2 diabetes, and right knee osteoarthritis. Which medication could be causing her symptoms?
Your Answer: Metformin
Correct Answer: Diclofenac
Explanation:Causes of Peptic Ulceration and the Role of Medications
Peptic ulceration is a condition that can cause acute gastrointestinal (GI) blood loss. One of the common causes of peptic ulceration is the reduction in the production of protective mucous in the stomach, which exposes the stomach epithelium to acid. This can be a consequence of using non-steroidal anti-inflammatory drugs (NSAIDs) such as diclofenac, which is commonly used in the treatment of osteoarthritis. Steroids are also known to contribute to peptic ulceration.
On the other hand, tramadol, an opiate, does not increase the risk of GI ulceration. It is important to be aware of the potential side effects of medications and to discuss any concerns with a healthcare provider. By doing so, patients can receive appropriate treatment while minimizing the risk of adverse effects.
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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 35-year-old woman presents to the Emergency Department with fever, abdominal pain and bright red, bloody bowel movements for the last 12 hours. She has also had multiple episodes of non-bloody vomiting for the last eight hours. She was diagnosed with ulcerative colitis three years ago and has been non-compliant with her management plan.
Her observations are as follows:
Temperature 38.3°C
Blood pressure 105/59 mmHg
Heart rate 105 bpm
Respiratory rate 24 breaths per minute
SpO2 99% (room air)
Examination demonstrates a diffusely tender and distended abdomen with hypoactive bowel sounds.
Which of the following is the next best diagnostic step?Your Answer: Abdominal ultrasound
Correct Answer: Abdominal X-ray
Explanation:Imaging Modalities for Abdominal Conditions: Choosing the Right Test
When a patient presents with abdominal symptoms, choosing the appropriate imaging modality is crucial for accurate diagnosis and timely treatment. Here are some considerations for different tests:
Abdominal X-ray: This is a quick and effective way to assess for conditions such as toxic megacolon, which can be life-threatening. A dilated transverse colon (>6 cm) on an abdominal X-ray is diagnostic of toxic megacolon.
Abdominal ultrasound: This test is useful for assessing the abdominal aorta for aneurysms, but it is not recommended for suspected inflammatory bowel disease.
Oesophagogastroduodenoscopy (OGD): This test is recommended for patients with suspected oesophageal or gastric pathology, but it is not useful for assessing the large colon.
Colonoscopy: While colonoscopy is a valuable tool for diagnosing ulcerative colitis, it is contraindicated during acute flares as it increases the risk of bowel perforation.
Computed tomography (CT) scan of the kidney, ureters and bladder: This test is indicated for patients with suspected kidney stones, which typically present with loin to groin pain and haematuria.
In summary, choosing the right imaging modality depends on the suspected condition and the patient’s symptoms. A prompt and accurate diagnosis can lead to better outcomes for patients.
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This question is part of the following fields:
- Gastroenterology
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Question 5
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A 62-year-old retiree comes to the clinic with complaints of abdominal pain and bloating. He reports recurrent belching after meals and a loss of taste for Chinese food, which he used to enjoy. This has been ongoing for the past 8 years. The patient had an upper GI endoscopy 6 years ago, which was reported as normal. He has tried various over-the-counter remedies and was prescribed medication by his primary care physician, but with little relief. What is the next recommended course of action for this patient?
Your Answer: Upper GI endoscopy
Explanation:Diagnostic and Treatment Options for Non-Ulcer Dyspepsia in Older Patients
Non-ulcer dyspepsia (NUD) is a common condition characterized by upper gastrointestinal (GI) symptoms without any identifiable cause. However, in older patients, these symptoms may be indicative of a more serious underlying condition. Therefore, the National Institute for Health and Care Excellence (NICE) guidelines recommend upper GI endoscopy for patients over the age of 55 with treatment-resistant symptoms.
Gastric motility studies are indicated in gastric disorders like gastroparesis but are not necessary for NUD diagnosis. Proton pump inhibitors or H2 blockers may be tried if alarm symptoms are not present. Anti-Helicobacter pylori treatment may also be considered. However, acupuncture is not validated as an effective treatment for NUD.
In summary, older patients with NUD should undergo endoscopic evaluation to rule out any serious underlying conditions. Treatment options include proton pump inhibitors, H2 blockers, and anti-Helicobacter pylori treatment, but acupuncture is not recommended.
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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 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: Crohn's disease
Correct 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 7
Correct
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A 45-year-old woman comes to the Surgical Admissions Unit complaining of colicky abdominal pain and vomiting in the right upper quadrant. The pain started while eating but is now easing. During the examination, she appears restless and sweaty, with a pulse rate of 100 bpm and blood pressure of 125/86. An abdominal ultrasound reveals the presence of gallstones.
What is the most frequent type of gallstone composition?Your Answer: Cholesterol
Explanation:Gallstones are formed in the gallbladder from bile constituents. In Europe and the Americas, they can be made of pure cholesterol, bilirubin, or a mixture of both. Mixed stones, also known as brown pigment stones, usually contain 20-80% cholesterol. Uric acid is not typically found in gallstones unless the patient has gout. Palmitate is a component of gallstones, but cholesterol is the primary constituent. Increased bilirubin production, such as in haemolysis, can cause bile pigment stones, which are most commonly seen in patients with haemolytic anaemia or sickle-cell disease. Calcium is a frequent component of gallstones, making them visible on radiographs, but cholesterol is the most common constituent.
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This question is part of the following fields:
- Gastroenterology
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Question 8
Correct
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A 55-year-old man, with a history of moderate alcohol intake (20 units/week), presents with complaints of arthralgia and worsening erectile dysfunction over the past 6–9 months. On examination, he has a deep tan and evidence of chronic liver disease. The following investigations were conducted:
Investigation Result Normal value
Haemoglobin 145 g/l 135–175 g/l
White Cell Count 8.3 x 109/l 4–11 x 109/l
Platelets 164 x 109/l 150–400 x 109/l
Urea 6.0 mmol/l 2.5–6.5 mmol/l
Sodium 140 mmol/l 135–145 mmol/l
Potassium 4.2 mmol/l 3.5–5.0 mmol/l
Creatinine 95 μmol/l 50–120 µmol/l
Aspartate Aminotransferase (AST) 65 IU/l 10–40 IU/l
Alanine Aminotransferase (ALT) 82 IU/l 5–30 IU/l
Alkaline Phosphatase 135 IU/l 30–130 IU/l
Bilirubin 23 mmol/l 2–17 µmol/l
Lactate dehydrogenase (LDH) 326 IU/l 100–190 IU/l
Serum iron 45 μmol/l 0.74–30.43 μmol/l
Total iron-binding capacity 6.2 μmol/l 10.74–30.43 μmol/l
Ferritin 623 μg/ 20–250 µg/l
Glucose 8.8 mmol/l <7.0 mmol/l
What is the most likely diagnosis?Your Answer: Haemochromatosis
Explanation:Differential Diagnosis for a Patient with Iron Overload
A middle-aged man presents with skin discoloration, chronic liver disease, arthralgia, and erectile dysfunction. His serum ferritin level is significantly elevated at 623, indicating iron overload. However, liver disease can also cause an increase in serum ferritin.
Acute viral hepatitis is unlikely as his symptoms have been worsening over the past 6-9 months, and his transaminase levels are only moderately elevated. Alcoholic cirrhosis is also unlikely as his alcohol intake is modest.
Excess iron ingestion is a possibility, but it would require significant ingestion over a long period of time. Wilson’s disease, a recessively inherited disorder of copper metabolism, is also unlikely as it does not explain the symptoms of iron overload.
Overall, the differential diagnosis for this patient includes haemochromatosis, a genetic disorder that causes iron overload. Further testing and evaluation are necessary to confirm the diagnosis and determine the appropriate treatment plan.
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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 56-year-old man presents with progressively worsening dysphagia, which is worse for food than liquid. He has lost several stones in weight and, on examination, he is cachexia. An oesophagogastroduodenoscopy (OGD) confirms oesophageal cancer.
Which of the following is the strongest risk factor for oesophageal adenocarcinoma?Your Answer: Barrett's oesophagus
Explanation:Understanding Risk Factors for Oesophageal Cancer
Oesophageal cancer is a type of cancer that is becoming increasingly common. It often presents with symptoms such as dysphagia, weight loss, and retrosternal chest pain. Adenocarcinomas, which are the most common type of oesophageal cancer, typically develop in the lower third of the oesophagus due to inflammation related to gastric reflux.
One of the risk factors for oesophageal cancer is Barrett’s oesophagus, which is the metaplasia of the squamous epithelium of the lower oesophagus when exposed to an acidic environment. This adaptive change significantly increases the risk of malignant change. Treatment options for Barrett’s oesophagus include ablative or excisional therapy and acid-lowering medications. Follow-up with repeat endoscopy every 2–5 years is required.
Blood group A is not a risk factor for oesophageal cancer, but it is associated with a 20% higher risk of stomach cancer compared to those with blood group O. A diet low in calcium is also not a risk factor for oesophageal carcinoma, but consumption of red meat is classified as a possible cause of oesophageal cancer. Those with the highest red meat intake have a 57% higher risk of oesophageal squamous cell carcinoma compared to those with the lowest intake.
Ulcerative colitis is not a risk factor for oesophageal cancer, but it is a risk factor for bowel cancer. On the other hand, alcohol is typically a risk factor for squamous cell carcinomas. Understanding these risk factors can help individuals take steps to reduce their risk of developing oesophageal cancer.
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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 23-year-old plumber is admitted to the Surgical Ward after undergoing an appendicectomy. A medical student conducts a thorough examination and takes a detailed medical history of the patient. The student observes that the patient is exhibiting jaundice but does not display any other symptoms of liver dysfunction. The liver function tests reveal the following results: total bilirubin of 52 mmol/l, aspartate aminotransferase (AST) 37 iu/l, alanine aminotransferase (ALT) 32 iu/l, and alkaline phosphatase 70 u/l. What is the likely condition affecting this patient?
Your Answer: Crigler-Najjar type II
Correct Answer: Gilbert’s syndrome
Explanation:Differentiating Causes of Jaundice: A Brief Overview
Jaundice is a common clinical finding that can be caused by a variety of underlying conditions. One possible cause is Gilbert’s syndrome, a congenital defect in the liver’s ability to conjugate bilirubin. This results in mild unconjugated hyperbilirubinemia, which may occasionally lead to jaundice during fasting or concurrent illness. However, Gilbert’s syndrome is typically benign and requires no treatment.
In contrast, Crigler-Najjar type I and type II are also defects in glucuronyl transferase activity, but they present with severe jaundice or death in the neonatal period. Wilson’s disease, a rare disorder of copper metabolism, can also cause jaundice, but it is unlikely to be the cause in this scenario.
Another possible cause of jaundice is Caroli’s syndrome, a congenital dilation of the intrahepatic bile duct that presents with recurrent episodes of cholangitis. It is important to differentiate between these various causes of jaundice in order to provide appropriate management and treatment.
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This question is part of the following fields:
- Gastroenterology
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