Gastroenterology Practice Questions

Q: Which of the following is NOT associated with acute pancreatitis?

Steatorrhea. **Explanation:** **1. Why Steatorrhea is the Correct Answer:** Steatorrhea (fatty, foul-smelling stools) is a hallmark of **exocrine pancreatic insufficiency**. This occurs when more than 90% of the pancreatic parenchyma is destroyed or non-functional. It is a classic feature of **Chronic Pancreatitis**, where there is permanent structural damage [1]. In **Acute Pancreatitis**, the inflammation is sudden and usually reversible; the gland typically retains enough functional capacity to prevent malabsorption during the acute phase. **2. Analysis of Incorrect Options:** * **Upper Abdominal Pain:** This is the most common presenting symptom (95% of cases). It is typically steady, boring, and severe, located in the epigastrium or periumbilical region [1]. * **Epigastric Tenderness:** Physical examination usually reveals significant tenderness in the upper abdomen, often accompanied by guarding and distension [1]. * **Cullen’s Sign:** This refers to periumbilical ecchymosis (bluish discoloration) caused by the tracking of hemoperitoneum from the retroperitoneum. While rare, it is a specific sign of **severe necrotizing pancreatitis**. **3. Clinical Pearls for NEET-PG:** * **Grey Turner’s Sign:** Ecchymosis in the flanks (associated with severe/hemorrhagic pancreatitis). * **Fox’s Sign:** Ecchymosis over the inguinal ligament. * **Most Common Cause:** Gallstones (overall), followed by Alcohol. * **Diagnosis:** Requires 2 out of 3: (1) Typical abdominal pain, (2) Serum Amylase/Lipase >3x upper limit, (3) Characteristic findings on imaging (CECT is the gold standard) [1]. * **Lipase vs. Amylase:** Lipase is more specific and remains elevated longer than amylase.

Q: Which of the following is true regarding Gilbert syndrome?

Improves with phenobarbitone administration.. **Explanation:** Gilbert syndrome is a common, benign condition characterized by a reduction in the activity of the enzyme **UDP-glucuronosyltransferase (UGT1A1)** [1]. This enzyme is responsible for the conjugation of bilirubin in the liver [3]. **Why Option C is correct:** Phenobarbitone is a potent inducer of microsomal enzymes, including UGT1A1 [3]. Administration of phenobarbitone increases the expression of the enzyme, thereby enhancing bilirubin conjugation and effectively lowering serum bilirubin levels [2]. This is a classic pharmacological response used to differentiate Gilbert syndrome from more severe types of Crigler-Najjar syndrome [1]. **Analysis of Incorrect Options:** * **Option A:** Gilbert syndrome is characterized by **unconjugated (indirect) hyperbilirubinemia**, as the defect lies in the conjugation process [4]. * **Option B:** The condition actually **worsens with starvation**, fasting, dehydration, stress, or intercurrent illness. Caloric restriction leads to an increase in unconjugated bilirubin levels [4]. * **Option D:** It is a **benign, non-life-threatening** condition [1]. Most patients are asymptomatic, and the liver architecture and other liver function tests (ALT, AST, ALP) remain perfectly normal. **High-Yield Clinical Pearls for NEET-PG:** * **Genetic Defect:** Most commonly due to a TATAA box mutation in the *UGT1A1* gene [4]. * **Diagnosis:** Suggested by isolated unconjugated hyperbilirubinemia (<3 mg/dL) in the absence of hemolysis (normal reticulocyte count and hemoglobin) [4]. * **Rifampicin Test:** Administration of Rifampicin can provoke an increase in bilirubin in these patients, aiding diagnosis. * **Prognosis:** Excellent; no specific treatment is required other than reassurance.

Q: Primary sclerosing cholangitis is associated with which of the following conditions?

Ulcerative colitis. **Primary Sclerosing Cholangitis (PSC)** is a chronic cholestatic liver disease characterized by inflammation, fibrosis, and stricturing of the intrahepatic and extrahepatic bile ducts [1]. **Why Option A is correct:** There is a profound association between PSC and **Inflammatory Bowel Disease (IBD)**, specifically **Ulcerative Colitis (UC)** [1]. Approximately **70-80%** of patients with PSC have underlying UC [2]. Conversely, about 2-5% of UC patients develop PSC. Interestingly, PSC can be diagnosed before, during, or years after the onset of colitis, and even after a total proctocolectomy. **Why the other options are incorrect:** * **B. Celiac Sprue:** This is an autoimmune-mediated intolerance to gluten affecting the small intestine. While it is associated with other autoimmune conditions (like Type 1 Diabetes or Dermatitis Herpetiformis), it has no specific link to PSC. * **C. Wilson’s Disease:** This is a genetic disorder of copper metabolism. While it causes liver cirrhosis, the pathology involves copper deposition in hepatocytes, not the biliary tree. * **D. Whipple’s Disease:** Caused by *Tropheryma whipplei*, this is a systemic infectious disease primarily affecting the small bowel and joints, unrelated to the biliary destruction seen in PSC. **High-Yield Clinical Pearls for NEET-PG:** * **Imaging Gold Standard:** MRCP/ERCP shows a characteristic **"Beaded Appearance"** (multifocal strictures and dilations). * **Antibody Marker:** **p-ANCA** is positive in 60-80% of cases (though not specific) [1]. * **Biopsy:** May show pathognomonic **"Onion-skin fibrosis"** around bile ducts. * **Malignancy Risk:** PSC significantly increases the risk of **Cholangiocarcinoma** and Colorectal Cancer. * **Gender Predilection:** Unlike Primary Biliary Cholangitis (PBC), PSC is more common in **males** (M:F ratio 3:1) [1].

Q: Which of the following is a poor prognostic factor in a patient with acute pancreatitis?

Leukocytosis > 20000/µL. **Explanation:** The prognosis of acute pancreatitis is determined by the severity of the systemic inflammatory response and the extent of pancreatic necrosis [1]. To predict outcomes, clinicians use scoring systems like **Ranson’s Criteria**, APACHE II, and the BISAP score. **Why Option A is Correct:** According to **Ranson’s Criteria**, a White Blood Cell (WBC) count **> 16,000/µL** at the time of admission is a significant indicator of severity. A leukocytosis of **> 20,000/µL** (as given in the option) reflects a profound systemic inflammatory response syndrome (SIRS), which correlates with a higher risk of multi-organ failure and pancreatic necrosis, thus indicating a poor prognosis [1]. **Why the Other Options are Incorrect:** * **Options B & C (Decreased Amylase/Lipase):** The absolute levels of serum amylase and lipase are diagnostic but **not prognostic**. A very high level does not mean the disease is severe, and a decrease does not necessarily mean the patient is worsening (though it may occur in end-stage chronic pancreatitis or massive necrosis, it is not a standard prognostic marker). * **Option D (Diastolic BP > 90 mmHg):** Hypertension is not a poor prognostic sign. In fact, **hypotension** (Systolic BP 200 mg/dL, **A**ge >55 yrs, **L**DH >350 IU/L, **A**ST >250 IU/L, **W**BC >16,000/µL [1]. * **Most sensitive marker for prognosis:** C-Reactive Protein (CRP) > 150 mg/L at 48 hours. * **Single best predictor of mortality:** Rising Blood Urea Nitrogen (BUN) or persistent SIRS. * **Imaging:** Contrast-Enhanced CT (CECT) is the gold standard for assessing necrosis (best done after 72 hours) [1].

Q: A 41-year-old male patient presented with recurrent episodes of bloody diarrhea for 5 years. Despite regular treatment with adequate doses of sulfasalazine, he has had several exacerbations of his disease and required several weeks of steroids for the control of flares. What should be the next line of treatment for him?

Azathioprine. The patient presents with chronic, relapsing Ulcerative Colitis (UC) that is **steroid-dependent** (requiring repeated courses of steroids to control flares) and refractory to 5-ASA (Sulfasalazine). [1] **1. Why Azathioprine is the Correct Answer:** In inflammatory bowel disease (IBD), when a patient fails to maintain remission with 5-ASA or becomes steroid-dependent, the next step is the introduction of **Thiopurines (Azathioprine or 6-Mercaptopurine)**. Azathioprine acts as a "steroid-sparing agent." It is the gold standard for maintaining remission in patients who have frequent relapses or cannot taper off steroids without a flare. [1] **2. Why the Other Options are Incorrect:** * **Methotrexate (A):** While effective in maintaining remission in **Crohn’s Disease**, its efficacy in Ulcerative Colitis is less established and not considered first-line compared to Azathioprine. * **Cyclosporine (C):** This is a rapidly acting immunosuppressant used for **acute severe ulcerative colitis** (rescue therapy) that is unresponsive to IV steroids. It is not used for long-term maintenance in a stable but relapsing patient. * **Cyclophosphamide (D):** This is not a standard treatment for IBD due to its significant toxicity profile (e.g., hemorrhagic cystitis, infertility). **Clinical Pearls for NEET-PG:** * **Step-up Therapy:** 5-ASA → Steroids (for flares) → Thiopurines (maintenance) → Biologics (Infliximab) → Surgery. [1], [2] * **Thiopurine Methyltransferase (TPMT):** Before starting Azathioprine, testing for TPMT enzyme activity is recommended to avoid severe bone marrow suppression. * **Monitoring:** Patients on Azathioprine require regular CBC monitoring for leukopenia and LFTs for hepatotoxicity. * **Indication for Surgery:** Total proctocolectomy is curative in UC, unlike in Crohn’s disease. [2]

Q: An increase in serum bilirubin level on prolonged fasting is seen in:

Gilbert syndrome. **Explanation:** **Gilbert Syndrome** is the correct answer because it is characterized by a reduced activity of the enzyme **UDP-glucuronosyltransferase (UGT1A1)**, which is responsible for conjugating bilirubin [1]. In these patients, the baseline unconjugated bilirubin is mildly elevated. **Prolonged fasting** (or a very low-calorie diet) leads to an increase in serum bilirubin levels because fasting decreases UGT1A1 activity further and increases the cycling of bilirubin. Other triggers for jaundice in Gilbert syndrome include stress, infection, menstruation, and strenuous exercise. **Analysis of Incorrect Options:** * **Dubin-Johnson Syndrome:** This is a conjugated hyperbilirubinemia caused by a defect in the **MRP2 transporter** (excretion into bile). It is characterized by a "black liver" on biopsy and is not typically exacerbated by short-term fasting. * **Pancreatic Tumors:** These cause **obstructive (conjugated) jaundice** due to mechanical compression of the common bile duct [1]. The bilirubin levels are persistently high and depend on the degree of obstruction, not fasting status. * **Crigler-Najjar Syndrome:** This involves a severe (Type I) or moderate (Type II) deficiency of UGT1A1 [1]. While it involves the same enzyme as Gilbert syndrome, the bilirubin levels are significantly higher from birth and do not rely on fasting for diagnosis; Type I is often fatal without treatment [1]. **High-Yield Pearls for NEET-PG:** * **Gilbert Syndrome:** Most common hereditary hyperbilirubinemia (autosomal recessive). Bilirubin levels are usually ** 1.4 mg/dL after 48 hours of calorie restriction) or **Nicotinic Acid Test**. * **Biopsy:** Liver histology is completely **normal**. * **Treatment:** No treatment is required; it is a benign condition.

Question 1

What is the best test for determining the eradication of H. pylori infection?

Accepted Answer

Breath urea test

Answer

Urease test

Answer

Tissue biopsy

Answer

Serum ELISA

Question 2

Which of the following is NOT associated with acute pancreatitis?

Accepted Answer

Steatorrhea

Answer

Epigastric tenderness

Answer

Upper abdominal pain

Answer

Cullen's sign

Question 3

What is true about the early stages of GERD?

Accepted Answer

Increased number of transient lower esophageal sphincter relaxations (TLOSRs)

Answer

Increased lower esophageal sphincter (LOS) pressure

Answer

Shortening of the lower esophageal sphincter (LOS)

Answer

Loss of intra-abdominal esophagus

Question 4

Which of the following is true regarding Gilbert syndrome?

Accepted Answer

Improves with phenobarbitone administration.

Answer

Characterized by conjugated hyperbilirubinemia.

Answer

Worsens with starvation.

Answer

Is a life-threatening condition.

Question 5

Primary sclerosing cholangitis is associated with which of the following conditions?

Accepted Answer

Ulcerative colitis

Answer

Celiac sprue

Answer

Wilson's disease

Answer

Whipple's disease

Question 6

Which of the following statements about achalasia cardia are TRUE?

Accepted Answer

Statements 1, 2, and 4 are true; statements 3 and 5 are false.

Answer

Statements 1, 2, and 3 are true; statements 4 and 5 are false.

Answer

Statements 1, 2, 3, and 4 are true; statement 5 is false.

Answer

Statements 1, 2, 4, and 5 are true; statement 3 is false.

Question 7

Which of the following is a poor prognostic factor in a patient with acute pancreatitis?

Accepted Answer

Leukocytosis > 20000/µL

Answer

Decreased serum amylase

Answer

Decreased serum lipase

Answer

Diastolic BP > 90 mmHg

Question 8

A 41-year-old male patient presented with recurrent episodes of bloody diarrhea for 5 years. Despite regular treatment with adequate doses of sulfasalazine, he has had several exacerbations of his disease and required several weeks of steroids for the control of flares. What should be the next line of treatment for him?

Accepted Answer

Azathioprine

Answer

Methotrexate

Answer

Cyclosporine

Answer

Cyclophosphamide

Question 9

An increase in serum bilirubin level on prolonged fasting is seen in:

Accepted Answer

Gilbert syndrome

Answer

Dubin-Johnson syndrome

Answer

Pancreatic tumors

Answer

Crigler-Najjar syndrome

Question 10

Odynophagia occurs in which of the following conditions?

Accepted Answer

Barrett's esophagus

Answer

Achalasia

Answer

Herpes esophagitis

Answer

Monilial esophagitis

Gastroenterology — MCQs

Gastroenterology — MCQs

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