Gastroenterology Practice Questions

Q: A 42-year-old company executive presents with a sudden upper gastrointestinal bleed of 5 liters of bright red blood, with no significant previous history. What is the most likely diagnosis?

Duodenal ulcer. **Explanation:** The correct answer is **Duodenal Ulcer (B)**. In the context of a massive upper gastrointestinal (UGI) bleed, **Duodenal Ulcer (DU)** is the most common cause overall [1]. The clinical presentation of a "sudden" and "massive" (5 liters) bleed is characteristic of an ulcer eroding into a major artery, most commonly the **gastroduodenal artery**, which lies posterior to the first part of the duodenum [1]. While the patient is a "company executive" (a classic stress-related descriptor), the sheer volume of blood points toward a high-pressure arterial source rather than superficial mucosal irritation. **Why other options are incorrect:** * **Esophageal Varices (A):** While variceal bleeding is often massive, it typically occurs in patients with underlying chronic liver disease (stigma of cirrhosis, splenomegaly, or jaundice). The question specifies "no significant previous history," making a peptic ulcer statistically more likely [1]. * **Gastritis (C) and Gastric Erosion (D):** These conditions generally cause "oozing" or "coffee-ground" emesis rather than a sudden, life-threatening 5-liter bright red hemorrhage [2]. They involve superficial mucosal layers and rarely erode into large-caliber vessels [2]. **Clinical Pearls for NEET-PG:** * **Most common cause of UGI bleed:** Duodenal Ulcer [3]. * **Most common vessel involved in massive DU bleed:** Gastroduodenal artery [1]. * **Dieulafoy’s Lesion:** A rare but important differential for massive bleed; it involves a large submucosal artery eroding through the gastric mucosa. * **Rockall Score & Blatchford Score:** High-yield scoring systems used to assess the severity and prognosis of UGI bleeding [3].

Q: In Peutz-Jeghers syndrome, where are polyps most commonly seen?

Small bowel. Peutz-Jeghers Syndrome (PJS) is an autosomal dominant condition characterized by the association of gastrointestinal hamartomatous polyps and mucocutaneous hyperpigmentation [1]. It is caused by a germline mutation in the STK11 (LKB1) tumor suppressor gene on chromosome 19. **Why Small Bowel is Correct:** In PJS, hamartomatous polyps can occur anywhere in the gastrointestinal tract, but the **small intestine** is the most frequent site of involvement (occurring in >90% of patients) [2]. Within the small bowel, the **jejunum** is the most common specific site, followed by the ileum and duodenum [2]. These polyps are histologically distinct, featuring a characteristic "arborizing" (tree-like) pattern of smooth muscle fibers. **Analysis of Incorrect Options:** * **A & B (Colon and Rectum):** While colonic polyps occur in approximately 30% of PJS patients, they are significantly less common than small bowel involvement. In contrast, the colon is the primary site for *Familial Adenomatous Polyposis (FAP)* [3]. * **D (Stomach):** Gastric polyps occur in about 25% of cases, making it the least common site among the options provided. **High-Yield Clinical Pearls for NEET-PG:** * **Clinical Triad:** Mucocutaneous pigmentation (melanotic macules on lips/buccal mucosa), gastrointestinal hamartomatous polyps, and an increased risk of visceral malignancies [1]. * **Common Complication:** The most common clinical presentation is **intussusception** (often leading to small bowel obstruction), as the large polyps act as lead points [2]. * **Cancer Risk:** Patients have a significantly high lifetime risk of both GI (colorectal, pancreatic) and extra-GI cancers (breast, ovary, cervix, and Sertoli cell tumors of the testes) [1]. * **Management:** Regular screening via upper GI endoscopy, colonoscopy, and capsule endoscopy/MR enterography is essential.

Q: Which of the following statements about Wilson's disease is false?

Ceruloplasmin levels are elevated.. Wilson’s disease (Hepatolenticular degeneration) is a disorder of copper metabolism caused by a mutation in the **ATP7B gene** on chromosome 13 [1]. This defect impairs the biliary excretion of copper and its incorporation into ceruloplasmin. **Why Option D is the Correct (False) Statement:** In Wilson’s disease, **ceruloplasmin levels are characteristically low** (<20 mg/dL), not elevated [2]. The defect in the ATP7B protein prevents the binding of copper to apoceruloplasmin. Unbound apoceruloplasmin is unstable and rapidly degraded in the circulation, leading to reduced serum levels. **Analysis of Other Options:** * **Option A (True):** It is an **autosomal recessive** condition. A family history is often present, and screening of siblings is mandatory. * **Option B (True):** **Kayser-Fleischer (KF) rings** are caused by copper deposition in the Descemet’s membrane of the cornea. They are present in 95% of patients with neurological symptoms and are best seen via slit-lamp examination [1]. * **Option C (True):** While serum *total* copper may be low (due to low ceruloplasmin), the **free (non-ceruloplasmin bound) copper** and **tissue copper levels** (liver, brain) are significantly elevated, leading to organ toxicity [1]. **NEET-PG High-Yield Pearls:** * **Gold Standard Diagnosis:** Increased hepatic copper content on liver biopsy (>250 μg/g dry weight). * **Neurological Hallmark:** Wing-beating tremor and "Face of the Giant Panda" sign on MRI Brain [1]. * **Hematology:** Coombs-negative hemolytic anemia is a classic presentation [1]. * **Treatment:** Drug of choice is **Penicillamine** (chelator) or **Trientine**. Oral **Zinc** is used for maintenance as it interferes with intestinal copper absorption.

Q: According to Child-Pugh staging, what is the score for Class B?

7-9 points. The **Child-Pugh Score** (also known as the Child-Turcotte-Pugh score) is a clinical tool used to assess the prognosis of chronic liver disease, primarily cirrhosis. It predicts mortality and the necessity of liver transplantation. ### **Explanation of the Correct Answer** The Child-Pugh classification categorizes patients into three classes based on a cumulative score derived from five parameters (Bilirubin, Albumin, INR, Ascites, and Encephalopathy). [1] * **Class A (5–6 points):** Indicates well-compensated liver disease (1-year survival ~100%). * **Class B (7–9 points):** Indicates significant functional impairment and moderately decompensated disease (1-year survival ~80%). * **Class C (10–15 points):** Indicates severe decompensation (1-year survival ~45%). Therefore, **Option B (7–9 points)** is the correct classification for Class B. ### **Analysis of Incorrect Options** * **Option A (5–6 points):** This represents Class A (Mild/Compensated). * **Option C (10–12 points):** This is a subset of Class C; however, Class C extends up to 15 points. * **Option D (13–15 points):** This represents the most severe end of Class C, but does not encompass the entire class or the requested Class B range. ### **NEET-PG High-Yield Pearls** * **Mnemonic for Parameters:** **"A-B-C-D-E"** (Albumin, Bilirubin, Coagulation/INR, Distension/Ascites, Encephalopathy). * **Scoring:** Each parameter is scored from 1 to 3. The minimum possible score is 5, and the maximum is 15. [1] * **Clinical Utility:** Child-Pugh is excellent for bedside assessment, but the **MELD Score** (Model for End-Stage Liver Disease) is now preferred for transplant prioritization as it is more objective (uses Creatinine, Bilirubin, and INR). * **Surgical Risk:** Class C patients have an extremely high perioperative mortality rate (>80%) and are generally considered poor candidates for non-emergent surgery.

Q: What are the presenting symptoms of immunoproliferative small intestinal lymphoma?

Chronic diarrhea. **Explanation:** **Immunoproliferative Small Intestinal Disease (IPSID)**, also known as Mediterranean lymphoma or Seligmann’s disease, is a variant of MALT lymphoma associated with *Campylobacter jejuni* infection. It is characterized by the production of truncated alpha heavy chains (Alpha heavy chain disease). 1. **Why Chronic Diarrhea is correct:** The primary pathology involves diffuse infiltration of the small intestinal mucosa (mainly duodenum and jejunum) by plasma cells. This leads to a severe **malabsorption syndrome**. Consequently, the most common presenting symptoms are **chronic diarrhea**, steatorrhea, weight loss, and abdominal pain. Clubbing is also a frequently associated clinical sign. 2. **Why incorrect options are wrong:** * **Obstruction:** While IPSID can cause bowel wall thickening, it typically presents as a diffuse mucosal process rather than a discrete, obstructing mass (unlike Western-type sporadic lymphoma). * **Peritonitis:** This is a sign of perforation. While lymphoma can perforate (especially after starting chemotherapy), it is a late complication and not the typical presenting symptom. * **Tenesmus:** This refers to the feeling of incomplete defecation, usually associated with rectal pathology (e.g., rectal cancer or ulcerative colitis). IPSID primarily affects the proximal small intestine. **High-Yield Pearls for NEET-PG:** * **Marker:** Presence of **Alpha heavy chains** in serum or intestinal secretions. * **Epidemiology:** Most common in young adults from lower socioeconomic backgrounds (Middle East/Mediterranean). * **Treatment:** Early-stage disease often responds to **Antibiotics** (Tetracycline/Metronidazole); advanced stages require CHOP chemotherapy. * **Radiology:** Barium studies may show "cobblestone" appearance or thickened mucosal folds.

Q: What constitutes the classical triad of Budd-Chiari syndrome?

Hepatomegaly, abdominal pain, ascites. **Explanation** **Budd-Chiari Syndrome (BCS)** is a clinical condition caused by the obstruction of hepatic venous outflow, occurring anywhere from the small hepatic veins to the junction of the inferior vena cava (IVC) with the right atrium. **1. Why Option C is Correct:** The pathophysiology involves sudden venous congestion of the liver, leading to sinusoidal hypertension and ischemic injury. This manifests as the **classical triad**: * **Hepatomegaly:** Due to acute congestion and engorgement of the liver. * **Abdominal Pain:** Resulting from the stretching of Glisson’s capsule. * **Ascites:** Caused by high sinusoidal pressure forcing fluid into the peritoneal cavity [1]. **2. Analysis of Incorrect Options:** * **Option A & B (Fever/Jaundice):** Fever is not a primary feature of BCS; its presence suggests an underlying infection or inflammatory process. While jaundice can occur in acute liver failure, it is not a component of the "classical triad." Charcot's triad of jaundice, RUQ pain, and fever is associated with cholangitis [2]. * **Option D (Jaundice):** While hepatomegaly and pain are present, jaundice is often mild or absent in chronic cases, making it less characteristic than the rapid accumulation of ascites. **3. NEET-PG High-Yield Pearls:** * **Most Common Cause:** In the West, it is **thrombosis** (often associated with Polycythemia Vera or Factor V Leiden). In Asia, **membranous webs** in the IVC are more common. * **Imaging Gold Standard:** **Doppler Ultrasonography** is the initial investigation of choice. * **The Caudate Lobule:** Often undergoes **compensatory hypertrophy** because its venous drainage enters the IVC directly, bypassing the main hepatic veins. * **Charcot’s Triad:** Do not confuse the BCS triad with Charcot’s Triad (Fever, Jaundice, RUQ pain), which indicates **Acute Cholangitis** [2].

Q: Which of the following is true about celiac sprue?

Anti-gliadin antibodies are IgA/IgG. **Explanation:** Celiac sprue (Gluten-sensitive enteropathy) is an immune-mediated inflammatory disorder of the small intestine triggered by the ingestion of gluten in genetically predisposed individuals [1]. **Why Option C is Correct:** Diagnosis involves serological testing for various antibodies. **Anti-gliadin antibodies (AGA)** can be of both **IgA and IgG** subclasses. While AGA is less specific than newer tests, it remains a classic marker. In patients with selective IgA deficiency (which is more common in Celiac disease), IgG-based tests (like IgG-deamidated gliadin peptide) are essential for diagnosis. **Analysis of Incorrect Options:** * **A. Associated with HLA-DR4:** This is incorrect. Celiac disease is strongly associated with **HLA-DQ2** (95%) and **HLA-DQ8** (5%) [1]. HLA-DR4 is typically associated with Rheumatoid Arthritis. * **B. Antiendomysial antibodies (EMA):** While EMA is highly specific (nearly 100%), **Anti-tissue Transglutaminase (tTG) IgA** is the preferred initial screening test because it is equally sensitive, more cost-effective, and less observer-dependent than EMA. * **D. No predisposition to malignancy:** This is incorrect. Chronic untreated Celiac disease carries a significant risk of malignancies, most notably **Enteropathy-associated T-cell lymphoma (EATL)** and small bowel adenocarcinoma [2]. **High-Yield Clinical Pearls for NEET-PG:** * **Gold Standard Diagnosis:** Small intestinal biopsy showing villous atrophy, crypt hyperplasia, and increased intraepithelial lymphocytes (Marsh Classification) [1]. * **Best Initial Test:** Anti-tTG IgA. * **Dermatological Association:** Dermatitis herpetiformis (intense pruritic vesicles on extensors). * **Site of Involvement:** Primarily the **duodenum** and proximal jejunum (where gluten concentration is highest).

Question 1

A 42-year-old company executive presents with a sudden upper gastrointestinal bleed of 5 liters of bright red blood, with no significant previous history. What is the most likely diagnosis?

Accepted Answer

Duodenal ulcer

Answer

Esophageal varices

Answer

Gastritis

Answer

Gastric erosion

Question 2

In Peutz-Jeghers syndrome, where are polyps most commonly seen?

Accepted Answer

Small bowel

Answer

Colon

Answer

Rectum

Answer

Stomach

Question 3

All of the following are part of the management of acute variceal hemorrhage except?

Accepted Answer

Beta blockers

Answer

Sengstaken-Blakemore tube

Answer

Octreotide

Answer

Band ligation

Question 4

Which of the following statements about Wilson's disease is false?

Accepted Answer

Ceruloplasmin levels are elevated.

Answer

It is an autosomal recessive disorder.

Answer

Kayser-Fleischer rings are typically seen.

Answer

Copper levels are elevated.

Question 5

According to Child-Pugh staging, what is the score for Class B?

Accepted Answer

7-9 points

Answer

5-6 points

Answer

10-12 points

Answer

13-15 points

Question 6

What are the presenting symptoms of immunoproliferative small intestinal lymphoma?

Accepted Answer

Chronic diarrhea

Answer

Obstruction

Answer

Peritonitis

Answer

Tenesmus

Question 7

Which of the following statements about Crohn's disease is true?

Accepted Answer

It can present with oral ulcerations resembling major aphthous ulcerations.

Answer

It is typically a self-limiting condition.

Answer

It is commonly observed in the Indian population.

Answer

Erythromycin is the usual treatment of choice.

Question 8

What constitutes the classical triad of Budd-Chiari syndrome?

Accepted Answer

Hepatomegaly, abdominal pain, ascites

Answer

Fever, jaundice, abdominal pain

Answer

Fever, ascites, jaundice

Answer

Abdominal pain, jaundice, hepatomegaly

Question 9

Large bowel (colonic) diarrhoea is associated with all of the following, except?

Accepted Answer

Large volume stool

Answer

Urgency

Answer

Tenesmus

Answer

Mucus

Question 10

Which of the following is true about celiac sprue?

Accepted Answer

Anti-gliadin antibodies are IgA/IgG

Answer

Associated with HLA-DR4

Answer

Antiendomysial antibodies are more specific and sensitive than other antibodies

Answer

No predisposition to malignancy

Gastroenterology — MCQs

Gastroenterology — MCQs

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