Gastroenterology Practice Questions

Q: A 50-year-old lady presented with a history of pain in the upper abdomen, nausea, and decreased appetite for 5 days. She had undergone cholecystectomy 2 years back. Her bilirubin was 10 mg/dl, SGOT 900 IU/L, SGPT 700 IU/L, and serum alkaline phosphatase was 280 IU/L. What is the most likely diagnosis?

Acute viral hepatitis. **Explanation:** The diagnosis of **Acute Viral Hepatitis** is primarily based on the biochemical profile of the liver function tests (LFTs). In this patient, the hallmark is the **massive elevation of transaminases (SGOT 900 IU/L, SGPT 700 IU/L)**. In viral hepatitis, aminotransferases typically exceed 500–1000 IU/L, reflecting acute hepatocellular injury. While the bilirubin is elevated (10 mg/dl), the Serum Alkaline Phosphatase (ALP) is only mildly elevated (280 IU/L), which is characteristic of a hepatocellular pattern rather than an obstructive one. **Why other options are incorrect:** * **Acute Cholangitis:** This typically presents with Charcot’s Triad (fever, jaundice, RUQ pain). While jaundice is present here, the ALP would be significantly higher (usually >3 times the upper limit of normal), and transaminase levels rarely reach such high peaks unless there is secondary hepatic ischemia. * **Acute Pancreatitis:** While it causes upper abdominal pain and nausea, it does not typically cause such profound elevations in bilirubin or transaminases unless there is a concomitant common bile duct stone (Gallstone Pancreatitis). Furthermore, the patient is post-cholecystectomy. * **Posterior Penetration of Peptic Ulcer:** This presents with referred back pain and signs of peritonitis or localized ileus, but it does not cause significant jaundice or a 10-20 fold increase in transaminases. **Clinical Pearls for NEET-PG:** * **De Ritis Ratio:** In most viral hepatitis, SGPT (ALT) > SGOT (AST). An exception is Alcoholic Hepatitis, where AST:ALT > 2:1. * **Obstructive vs. Hepatocellular:** High ALP + High Bilirubin = Obstructive (Surgical) Jaundice. High Transaminases + High Bilirubin = Hepatocellular (Medical) Jaundice. * **Post-cholecystectomy pain:** Always consider Post-cholecystectomy Syndrome (PCS), but biochemical markers must guide the specific etiology.

Q: Feline esophagus is most commonly associated with which of the following conditions?

Gastroesophageal reflux disease (GERD). **Explanation:** The term **"Feline Esophagus"** (also known as esophageal shingling or transient esophageal rings) refers to the endoscopic appearance of multiple, fine, concentric mucosal rings that resemble the normal anatomy of a cat's esophagus. **1. Why GERD is the correct answer:** While historically debated, current medical literature and standard textbooks (including Harrison’s) associate the classic "feline esophagus" primarily with **Gastroesophageal Reflux Disease (GERD)**. These rings are transient and occur due to the contraction of the *muscularis mucosae* in response to acid irritation [1]. They typically disappear upon esophageal insufflation during endoscopy. **2. Analysis of Incorrect Options:** * **Option A: Eosinophilic Esophagitis (EoE):** This is the most common distractor. EoE is characterized by **fixed** concentric rings (often called "trachealization" of the esophagus). Unlike the transient feline esophagus of GERD, these rings are permanent and do not disappear with air insufflation. * **Option C & D: Radiation Esophagitis and Carcinoma:** These conditions typically present with strictures, ulcerations, or irregular masses rather than the rhythmic, concentric, transient rings seen in feline esophagus. **3. Clinical Pearls for NEET-PG:** * **Feline Esophagus:** Transient rings, associated with **GERD** [1]. * **Trachealization/Ringed Esophagus:** Fixed rings, associated with **Eosinophilic Esophagitis**. * **Endoscopic Triad of EoE:** Fixed rings, linear furrows, and white exudates (microabscesses). * **Key Distinction:** If the question mentions rings that **disappear with insufflation**, think GERD. If they are **fixed/permanent**, think EoE.

Q: What is the best treatment for a refractory peri-anal fistula in Crohn's disease?

Infliximab. **Explanation:** The management of perianal Crohn’s disease (PCD) is complex and requires a multidisciplinary approach. For **refractory perianal fistulas**, medical therapy with biological agents is the gold standard. **1. Why Infliximab is correct:** Infliximab (a chimeric monoclonal antibody against TNF-α) is the first-line medical treatment for complex or refractory fistulizing Crohn’s disease. It is the only agent proven in randomized controlled trials (ACCENT II study) to be effective in inducing and maintaining the closure of enterocutaneous and perianal fistulas. It works by reducing transmural inflammation, allowing the fistula tract to heal. **2. Why the other options are incorrect:** * **Fistulectomy (A):** In Crohn’s disease, aggressive surgeries like fistulectomy are generally **contraindicated** because the underlying tissue has poor healing capacity. It carries a high risk of non-healing wounds, fecal incontinence, and may eventually necessitate a proctectomy. Surgery in PCD is usually limited to "conservative" measures like seton placement to prevent abscess formation. * **Olasalizine (C) & Mesalamine (D):** These are 5-ASA derivatives. While they are used for maintaining remission in mild-to-moderate luminal ulcerative colitis or Crohn’s, they have **no proven efficacy** in treating fistulizing disease or perianal complications. **NEET-PG High-Yield Pearls:** * **First-line for simple fistula:** Metronidazole or Ciprofloxacin (Antibiotics). * **Best imaging modality:** MRI Pelvis (Gold standard for mapping the fistula tract). * **Surgical goal:** "Drainage, not cure." Use non-cutting setons to maintain patency and prevent recurrent abscesses. * **Combination Therapy:** Combining Infliximab with surgical seton drainage yields better results than either alone.

Q: What is the most common cause of lower gastrointestinal bleeding in adults?

Diverticulitis. **Explanation:** **Correct Answer: A. Diverticulosis (Diverticular Disease)** *Note: While the option says "Diverticulitis," in clinical practice and exams, **Diverticulosis** is the most common cause of brisk, painless lower gastrointestinal bleeding (LGIB) in adults, accounting for approximately 30–50% of cases. The bleeding occurs because the vasa recta (nutrient arteries) become stretched over the dome of the diverticulum, leading to eccentric thickening and eventual rupture into the colonic lumen.* [1] **Analysis of Incorrect Options:** * **B. Ulcerative Colitis:** While inflammatory bowel disease (IBD) frequently causes bloody diarrhea, it is a less common cause of massive or acute LGIB compared to diverticular disease. [2] * **C. Angiodysplasia:** These are small vascular malformations (ectasias). While they are a common cause of chronic or occult bleeding in the elderly (especially in the right colon), they account for only about 5–10% of acute LGIB cases. * **D. Colorectal Cancer:** Malignancies typically present with chronic, low-grade occult bleeding (leading to iron deficiency anemia) rather than acute, massive hematochezia. [2] **High-Yield Clinical Pearls for NEET-PG:** * **Most common cause of LGIB in adults:** Diverticulosis. * **Most common cause of LGIB in children:** Meckel’s Diverticulum. * **Anatomical Fact:** Although diverticula are more common on the left side (sigmoid colon), diverticular **bleeding** more frequently originates from the **right colon**. * **Clinical Presentation:** Diverticular bleeding is typically **painless** and sudden, whereas bleeding from diverticulitis is rare (inflammation usually obliterates the vessel). * **Management:** Most cases (75%) of diverticular bleeding resolve spontaneously with conservative management. [1]

Q: The most commonly used scoring system to assess mortality and risk of rebleeding in the setting of nonvariceal upper GI bleeding is:

The complete Rockall scoring. **Explanation:** The **Complete Rockall Score** is the gold standard for predicting both **mortality and the risk of rebleeding** in patients with non-variceal upper gastrointestinal bleeding (NVUGIB). It is a composite score consisting of: 1. **Clinical components:** Age, shock (heart rate/blood pressure), and comorbidities. 2. **Endoscopic components:** Diagnosis and endoscopic stigmata of recent hemorrhage (e.g., visible vessel, adherent clot). A score of 8 indicates a high risk of mortality. **Analysis of Options:** * **A. Blatchford Score (Glasgow-Blatchford Score):** This is primarily used **pre-endoscopy** to identify "low-risk" patients who can be safely managed as outpatients without urgent intervention. It does not require endoscopic findings but is less specific for mortality than the Rockall score. * **B. Clinical Rockall Score:** This uses only the clinical parameters (Age, Shock, Comorbidity) before endoscopy. While useful for initial triage, it is less accurate than the "Complete" score because it lacks the prognostic data provided by the endoscopic diagnosis. * **C. Artificial Neural Network Score:** These are complex computer-based models. While they show promise in research settings for high accuracy, they are not "commonly used" in standard clinical practice or guidelines. **High-Yield Clinical Pearls for NEET-PG:** * **Rockall Score:** Best for mortality and rebleeding (Post-endoscopy). * **Glasgow-Blatchford Score (GBS):** Best for deciding the need for intervention/hospitalization (Pre-endoscopy). * **Forrest Classification:** Used during endoscopy to grade ulcer bleeding and guide the need for endoscopic therapy (e.g., Forrest Ia/Ib require active intervention). * **Most common cause of NVUGIB:** Peptic Ulcer Disease.

Q: A patient with jaundice is given Vitamin K, but their Prothrombin Time (PT) remains unchanged. What is the probable cause?

Cirrhosis. **Explanation:** The correct answer is **Cirrhosis**. This question tests the clinical application of the **Koller Test**, which differentiates between obstructive jaundice and parenchymal liver disease. **1. Why Cirrhosis is correct:** Prothrombin Time (PT) depends on the synthesis of clotting factors (II, VII, IX, and X) by the liver. This process requires **Vitamin K** as a cofactor. In **Cirrhosis**, there is extensive damage to the hepatocytes (liver cells). Even if Vitamin K is supplemented, the "factory" (the liver) is too damaged to utilize it to synthesize clotting factors [1]. Therefore, the PT remains prolonged and unchanged. **2. Why the other options are incorrect:** * **Obstructive Jaundice:** In this condition, bile flow is blocked, leading to poor absorption of fat-soluble vitamins (A, D, E, K). The liver cells are initially healthy but lack the raw material (Vitamin K). When Vitamin K is given parenterally, the healthy liver quickly uses it, and the **PT corrects** within 24–48 hours [1]. * **Hemolytic Jaundice:** This is a pre-hepatic condition where jaundice is caused by excessive RBC breakdown. Liver function and Vitamin K absorption are typically normal; thus, PT is usually not prolonged. * **Pre-renal Failure:** This relates to kidney perfusion and does not directly affect the Vitamin K-dependent clotting factor synthesis. **Clinical Pearls for NEET-PG:** * **Koller Test:** If PT improves by >30% within 24 hours of Vitamin K injection, it suggests obstructive jaundice. No improvement suggests parenchymal disease (Cirrhosis). * **Factor VII:** Has the shortest half-life (4–6 hours) among clotting factors, making PT the earliest indicator of acute liver injury [1]. * **Albumin vs. PT:** Albumin is a marker of **chronic** liver synthetic function, while PT is a marker of **acute and chronic** synthetic function [1].

Question 1

A 50-year-old lady presented with a history of pain in the upper abdomen, nausea, and decreased appetite for 5 days. She had undergone cholecystectomy 2 years back. Her bilirubin was 10 mg/dl, SGOT 900 IU/L, SGPT 700 IU/L, and serum alkaline phosphatase was 280 IU/L. What is the most likely diagnosis?

Accepted Answer

Acute viral hepatitis

Answer

Acute pancreatitis

Answer

Acute cholangitis

Answer

Posterior penetration of peptic ulcer

Question 2

Feline esophagus is most commonly associated with which of the following conditions?

Accepted Answer

Gastroesophageal reflux disease (GERD)

Answer

Eosinophilic esophagitis

Answer

Radiation esophagitis

Answer

Carcinoma of the esophagus

Question 3

Which of the following statements regarding Crohn's disease is correct?

Accepted Answer

Medical management includes antibiotics, immunosuppressive agents, and biologic agents.

Answer

Crohn's disease has no increased risk for colonic cancer.

Answer

Crohn's disease has no effect on fertility.

Answer

An associated enteroenteric fistula is an indication for urgent surgery.

Question 4

A 25-year-old woman develops nausea, vomiting, and abdominal pain. On examination, she has tender hepatomegaly and ascites. She was recently started on oral contraceptives. What is the most likely clinical diagnosis?

Accepted Answer

Budd-Chiari syndrome

Answer

Acute viral hepatitis

Answer

Portal hypertension

Answer

Acute cholecystitis

Question 5

Which one of the following treatments is effective in primary biliary cirrhosis?

Accepted Answer

Ursodeoxycholic acid

Answer

Prednisolone

Answer

Interferon a-2B

Answer

D-Penicillamine

Question 6

What is the best treatment for a refractory peri-anal fistula in Crohn's disease?

Accepted Answer

Infliximab

Answer

Fistulectomy

Answer

Olasalizine

Answer

Mesalamine

Question 7

Hyper-pigmented skin with xanthelasma and xanthomas suggests the possibility of which diagnosis?

Accepted Answer

Primary biliary cirrhosis

Answer

Primary sclerosing cholangitis

Answer

Amyloidosis

Answer

Tuberculosis

Question 8

What is the most common cause of lower gastrointestinal bleeding in adults?

Accepted Answer

Diverticulitis

Answer

Ulcerative colitis

Answer

Angiodysplasia of the colon

Answer

Colorectal cancer

Question 9

The most commonly used scoring system to assess mortality and risk of rebleeding in the setting of nonvariceal upper GI bleeding is:

Accepted Answer

The complete Rockall scoring

Answer

Blatchford Score

Answer

The Clinical Rockall Score

Answer

Artificial neural network score

Question 10

A patient with jaundice is given Vitamin K, but their Prothrombin Time (PT) remains unchanged. What is the probable cause?

Accepted Answer

Cirrhosis

Answer

Obstructive Jaundice

Answer

Hemolytic Jaundice

Answer

Pre-renal Failure

Gastroenterology — MCQs

Gastroenterology — MCQs

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