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Question 1
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A middle-aged woman presented to her General Practitioner (GP) with a 3-month history of epigastric pain and weight loss. She mentions that she tried over-the-counter antacids which provided some relief initially, but the pain has got worse. She decided to see her GP after realising she had lost about 5 kg. She denies any vomiting or loose stools. She has never had problems with her stomach before and she has no significant family history. Endoscopy and biopsy are performed; histology shows active inflammation.
What is the most likely diagnosis?Your Answer: Duodenal ulcer
Correct Answer: Helicobacter pylori gastritis
Explanation:Helicobacter pylori gastritis is a common condition that can cause gastritis and peptic ulcers in some individuals. It is caused by a Gram-negative bacterium and can increase the risk of gastric adenocarcinoma. Treatment with antibiotics is necessary to eradicate the infection. Invasive carcinoma is unlikely in this patient as they do not have other symptoms associated with it. A duodenal ulcer is possible but not confirmed by the upper GI endoscopy. Crohn’s disease is unlikely as it presents with different symptoms. A gastrointestinal stromal tumour would have been detected during the endoscopy.
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This question is part of the following fields:
- Gastroenterology
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Question 2
Correct
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An obese 60-year-old man presents to his General Practitioner (GP) with ongoing vague abdominal pain and fatigue for the last three months. His past medical history is significant for type 2 diabetes mellitus and hypertension.
Physical examination suggests hepatomegaly. Laboratory studies reveal a negative hepatitis panel and normal iron studies. Antibodies for autoimmune liver disease are also normal.
A diagnosis of non-alcoholic fatty liver disease (NAFLD) is likely.
Which of the following is the most appropriate treatment for this patient?Your Answer: Weight loss
Explanation:Management of Hepatomegaly and Non-Alcoholic Fatty Liver Disease (NAFLD)
Hepatomegaly and non-alcoholic fatty liver disease (NAFLD) are common conditions that require appropriate management to prevent progression to liver cirrhosis and other complications. The following are important considerations in the management of these conditions:
Diagnosis: Diagnosis of NAFLD involves ruling out other causes of hepatomegaly and demonstrating hepatic steatosis through liver biopsy or radiology.
Conservative management: Most patients with NAFLD can be managed conservatively with maximized control of cardiovascular risk factors, weight loss, immunizations to hepatitis A and B viruses, and alcohol abstinence. Weight loss in a controlled manner is recommended, with a 10% reduction in body weight over a 6-month period being an appropriate recommendation to patients. Rapid weight loss should be avoided, as it can worsen liver inflammation and fibrosis. Unfortunately, no medications are currently licensed for the management of NAFLD.
Liver transplant: Patients with NAFLD do not require a liver transplant at this stage. Conservative management with weight loss and controlling cardiovascular risk factors is the recommended approach.
Oral steroids: Oral steroids are indicated in patients with autoimmune hepatitis. Patients with autoimmune hepatitis typically present with other immune-mediated conditions like pernicious anemia and ulcerative colitis.
Penicillamine: Penicillamine is the treatment for patients with Wilson’s disease, a rare disorder of copper excretion that leads to excess copper deposition in the liver and brain. Patients typically present with neurological signs like tremor, ataxia, clumsiness, or abdominal signs like fulminant liver failure.
Ursodeoxycholic acid: Ursodeoxycholic acid is used in the management of primary biliary cholangitis (PBC), a condition more common in women. Given this patient’s normal autoimmune screen, PBC is an unlikely diagnosis.
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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 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 4
Incorrect
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A 30-year-old Caucasian woman complains of weight loss, steatorrhoea and diarrhoea. Anaemia and metabolic bone disease are detected during investigations. A small intestine biopsy reveals severe villous atrophy, particularly in the proximal segments. The patient responds well to a gluten-free diet for one year, but her symptoms return despite maintaining the diet. A repeat biopsy shows changes similar to the previous one. What condition should be suspected in this patient?
Your Answer: Dermatitis herpetiformis
Correct Answer: T-cell intestinal lymphoma
Explanation:Considerations for Non-Responsive Coeliac Disease
Coeliac disease, also known as gluten-sensitive enteropathy, is associated with specific human leukocyte antigen subtypes. The hallmark of this disease is the disappearance of clinical features and intestinal histologic findings upon discontinuing gluten in the diet. However, in cases where patients who were previously responding well to a gluten-free diet stop responding, the possibility of intestinal T-cell lymphoma, a complication of coeliac disease, should be strongly considered.
Other conditions, such as tropical sprue, dermatitis herpetiformis, collagenous sprue, and refractory sprue, may also present with similar symptoms but have different responses to gluten restriction. Tropical sprue does not respond to gluten restriction, while dermatitis herpetiformis is a skin disease associated with coeliac disease and does not cause failure of response to a gluten-free diet. Collagenous sprue is characterized by the presence of a collagen layer beneath the basement membrane and does not respond to a gluten-free diet. Refractory sprue, on the other hand, is a subset of coeliac disease where patients do not respond to gluten restriction and may require glucocorticoids or restriction of soy products.
In conclusion, when a patient with coeliac disease stops responding to a gluten-free diet, it is important to consider the possibility of intestinal T-cell lymphoma and differentiate it from other conditions that may present with similar symptoms but have different responses to gluten restriction.
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This question is part of the following fields:
- Gastroenterology
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Question 5
Incorrect
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A 45-year-old man who lives in a local hostel for the homeless is added onto the medical take following a seizure. He last consumed alcohol 32 h previously and, when assessed, he is tremulous and anxious, wishing to self-discharge. His nutritional status and personal hygiene are poor.
Which one of the following is the most essential to be carefully monitored while an inpatient?Your Answer: Sodium
Correct Answer: Phosphate
Explanation:Monitoring Electrolytes in Alcohol Withdrawal: Importance of Serum Phosphate
Alcohol dependency can lead to poor personal hygiene, nutritional deficiencies, and alcohol withdrawal. During withdrawal, electrolyte imbalances may occur, including magnesium, potassium, and serum phosphate. Of these, serum phosphate levels require close monitoring, especially during refeeding, as they may plummet dangerously low and require prompt replacement with intravenous phosphate. Gamma glutamyl transferase (GGT) may also be elevated but is not useful in this situation. Sodium levels should be monitored to avoid hyponatraemia, but serum phosphate levels are more likely to change rapidly and must be monitored closely to prevent refeeding syndrome. Haemoglobin levels are not the most appropriate answer in this case unless there is an acute change or bleeding risk.
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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 29-year-old Caucasian man presents with a 3-month history of diarrhoea, fatigue, and weight loss. He denies any history of alcohol or drug abuse. He frequently travels to southern India for work. Laboratory tests show mixed macrocytic anaemia with low levels of serum folate and vitamin B12. Stool examination is negative for ova and parasites. A small bowel biopsy reveals predominant mononuclear infiltration and villous destruction throughout the small intestine. What intervention is most likely to improve his symptoms?
Your Answer: Antihelminthic drugs
Correct Answer: Broad spectrum antibiotics like tetracycline and folate
Explanation:Treatment Options for Tropical Sprue: Broad Spectrum Antibiotics and Folate Supplementation
Tropical sprue is a condition commonly seen in individuals visiting or residing in tropical countries, particularly in southern India. It is characterized by chronic diarrhea, weight loss, and deficiencies in vitamin B12 and folate. Stool examination typically shows no evidence of ova and parasites, while small intestinal biopsy reveals mononuclear cell infiltration and less villous atrophy throughout the intestine.
The recommended treatment for tropical sprue involves the use of broad-spectrum antibiotics, such as tetracyclines, along with folate supplementation. This approach has been shown to effectively reverse the changes in the small intestine associated with the condition.
Other treatment options, such as antihelminthic drugs, are not effective in treating tropical sprue. Similarly, pancreatic enzyme replacement is not indicated in this condition.
It is important to note that tropical sprue should not be confused with coeliac disease, which is treated with a gluten-free diet. In coeliac disease, small intestinal biopsy typically shows severe villous atrophy and mononuclear cell infiltration in the proximal portion of the small bowel.
Finally, double-strength trimethoprim and sulfamethoxazole is used in the treatment of Whipple’s disease, which is characterized by PAS-positive macrophages in the lamina propria of the small intestine.
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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 44-year-old man with diagnosed primary sclerosing cholangitis (PSC) had been taking cholestyramine and vitamin supplementation for the last 3 years. He had ulcerative colitis which was in remission, and colonoscopic surveillance had not shown any dysplastic changes. His only significant history was two episodes of cholangitis for which he had to be hospitalised in the past year. On examination, he was mildly icteric with a body weight of 52 kg. At present, he had no complaints, except fatigue.
What is the next best treatment option?Your Answer: Antibiotic prophylaxis
Correct Answer: Liver transplantation
Explanation:The only definitive treatment for advanced hepatic disease in primary sclerosing cholangitis (PSC) is orthotopic liver transplantation (OLT). Patients with intractable pruritus and recurrent bacterial cholangitis are specifically indicated for transplant. Although there is a 25-30% recurrence rate in 5 years, outcomes following transplant are good, with an 80-90% 5-year survival rate. PSC has become the second most common reason for liver transplantation in the United Kingdom. Other treatments such as steroids, azathioprine, methotrexate, and pentoxifylline have not been found to be useful. Antibiotic prophylaxis with ciprofloxacin or co-trimoxazole can be used to treat bacterial ascending cholangitis, but it will not alter the natural course of the disease.
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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 50-year-old man comes to the clinic complaining of restlessness and drowsiness. He has a history of consuming more than fifty units of alcohol per week. During the examination, he displays a broad-based gait and bilateral lateral rectus muscle palsy, as well as nystagmus. What is the probable diagnosis?
Your Answer: Alcohol withdrawal
Correct Answer: Wernicke’s encephalopathy
Explanation:Wernicke’s Encephalopathy: A Serious Condition Linked to Alcoholism and Malnutrition
Wernicke’s encephalopathy is a serious neurological condition characterized by confusion, ataxia, and ophthalmoplegia. It is commonly seen in individuals with a history of alcohol excess and malnutrition, and can even occur during pregnancy. The condition is caused by a deficiency in thiamine, a vital nutrient for the brain.
If left untreated, Wernicke’s encephalopathy can lead to irreversible Korsakoff’s syndrome. Therefore, it is crucial to recognize and treat the condition as an emergency with thiamine replacement. The therapeutic window for treatment is short-lived, making early diagnosis and intervention essential.
In summary, Wernicke’s encephalopathy is a serious condition that can have devastating consequences if left untreated. It is important to consider this diagnosis in confused patients, particularly those with a history of alcoholism or malnutrition. Early recognition and treatment with thiamine replacement can prevent the development of Korsakoff’s syndrome and improve outcomes for affected individuals.
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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 32-year-old woman who was diagnosed with ulcerative colitis (UC) five years ago is seeking advice on the frequency of colonoscopy in UC. Her UC is currently under control, and she has no family history of malignancy. She had a routine colonoscopy about 18 months ago. When should she schedule her next colonoscopy appointment?
Your Answer: As soon as possible – they should be done annually
Correct Answer: In four years' time
Explanation:Colonoscopy Surveillance for Patients with Ulcerative Colitis
Explanation:
Patients with ulcerative colitis (UC) are at an increased risk for colonic malignancy. The frequency of colonoscopy surveillance depends on the activity of the disease and the family history of colorectal cancer. Patients with well-controlled UC are considered to be at low risk and should have a surveillance colonoscopy every five years, according to the National Institute for Health and Care Excellence (NICE) guidelines. Patients at intermediate risk should have a surveillance colonoscopy every three years, while patients in the high-risk group should have annual screening. It is important to ask about the patient’s family history of colorectal cancer to determine their risk stratification. Colonoscopy is not only indicated if the patient’s symptoms deteriorate, but also for routine surveillance to detect any potential malignancy. -
This question is part of the following fields:
- Gastroenterology
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Question 10
Incorrect
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A 38-year-old man presents to the clinic after an insurance medical. He was noted to have an abnormal alanine aminotransferase (ALT). Past history includes obesity, hypertension and hypercholesterolaemia, which he manages with diet control. He denies any significant alcohol intake. He has a body mass index (BMI) of 31.
Investigations:
Investigation Result Normal value
Haemoglobin 139 g/l 135–175 g/l
White cell count (WCC) 4.1 × 109/l 4–11 × 109/l
Platelets 394 × 109/l 150–400 × 109/l
Sodium (Na+) 143 mmo/l 135–145 mmol/l
Potassium (K+) 4.9 mmol/l 3.5–5.0 mmol/l
Creatinine 85 μmol/l 50–120 µmol/l
Alanine aminotransferase (ALT) 150 IU/l 5–30 IU/l
Alkaline phosphatase 95 IU/l 30–130 IU/l
Bilirubin 28 μmol/l 2–17 µmol/l
Total cholesterol 6.8 mmol/l < 5.2 mmol/l
Triglycerides 3.8 mmol/l 0–1.5 mmol/l
Ultrasound of liver Increase in echogenicity
Which of the following is the most likely diagnosis?Your Answer:
Correct Answer: Non-alcoholic fatty liver disease (NAFLD)
Explanation:Understanding Liver Diseases: NAFLD, Viral Hepatitis, Alcohol-related Cirrhosis, Wilson’s Disease, and Haemochromatosis
Liver diseases can have various causes and presentations. One of the most common is non-alcoholic fatty liver disease (NAFLD), which is closely associated with obesity, hypertension, diabetes, and dyslipidaemia. NAFLD is often asymptomatic, but some patients may experience tiredness or epigastric fullness. Weight loss is the primary treatment, although glitazones have shown promising results in improving liver function.
Viral hepatitis is another common liver disease, but there are no indicators of it in this patient’s history. Alcohol-related cirrhosis is often caused by excessive alcohol intake, but this patient denies alcohol consumption, making NAFLD a more likely diagnosis.
Wilson’s disease typically presents with neuropsychiatric symptoms or signs, and the presence of Kayser-Fleischer rings is a key diagnostic feature. Haemochromatosis, on the other hand, results from iron overload and is often associated with diabetes mellitus and bronzing of the skin.
Understanding the different types of liver diseases and their presentations is crucial in making an accurate diagnosis and providing appropriate treatment.
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This question is part of the following fields:
- Gastroenterology
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