Gastroenterology Practice Questions

Q: A 50-year-old male presented with a history of hematemesis of 500ml of blood. On examination, his BP was 90/60 mmHg, PR was 110 bpm, and he had splenomegaly 5 cm below the lower costal margin. What is the most probable diagnosis?

Portal hypertension. ### Explanation The correct diagnosis is **Portal Hypertension**, likely leading to esophageal variceal bleeding [1]. **1. Why Portal Hypertension is correct:** The clinical presentation features a classic triad: **Massive Hematemesis** (500ml), **Hemodynamic Instability** (Hypotension 90/60 mmHg and Tachycardia 110 bpm), and **Splenomegaly** [2]. In the context of upper GI bleeding, the presence of splenomegaly is a hallmark sign of portal hypertension (congestive splenomegaly) [3]. This suggests that the bleeding source is most likely esophageal or gastric varices resulting from underlying cirrhosis or non-cirrhotic portal fibrosis [1]. **2. Why other options are incorrect:** * **Mallory-Weiss tear:** This involves a mucosal tear at the gastroesophageal junction, typically following forceful vomiting or retching. While it causes hematemesis, it is **not associated with splenomegaly**. * **Duodenal Ulcer:** This is a common cause of upper GI bleed (peptic ulcer disease). However, it does not cause splenomegaly unless there is a co-existing liver disease. * **Gastritis:** Erosive gastritis can cause hematemesis, but the bleeding is usually less massive, and like the other incorrect options, it **does not explain the presence of an enlarged spleen**. **Clinical Pearls for NEET-PG:** * **Splenomegaly + Hematemesis = Portal Hypertension** until proven otherwise [2]. * **Initial Management:** The first step in any massive hematemesis is hemodynamic stabilization (IV fluids/resuscitation), followed by an urgent Upper GI Endoscopy [2]. * **Drug of Choice:** Octreotide or Terlipressin is used to reduce portal pressure in suspected variceal bleeds. * **Prophylaxis:** Propranolol (non-selective beta-blocker) is used for primary prophylaxis of variceal bleeding.

Q: Which oral lesion is associated with ulcerative colitis?

Pyostomatitis vegetans. **Explanation:** **Pyostomatitis vegetans (PV)** is a rare, highly specific oral manifestation of Inflammatory Bowel Disease (IBD), most commonly associated with **Ulcerative Colitis (UC)** (and occasionally Crohn’s disease). It is considered the oral counterpart of *Pyoderma gangrenosum*. * **Mechanism:** It is characterized by multiple "snail-track" ulcers (friable, yellowish-white pustules) on an erythematous base in the oral mucosa. These lesions often mirror the activity of the intestinal disease; they flare when the colitis is active and typically resolve once the underlying UC is treated or a colectomy is performed. **Analysis of Incorrect Options:** * **Pemphigus:** This is an autoimmune blistering disorder (Type II hypersensitivity) involving antibodies against desmogleins. While it causes oral ulcers, it has no specific association with UC. * **Scleroderma:** Characterized by microvascular damage and fibrosis. Oral findings include a widened periodontal ligament space and microstomia (limited mouth opening), not vegetative pustules. * **Sarcoidosis:** A multisystem granulomatous disease. Oral involvement is rare but usually presents as asymptomatic nodules or salivary gland enlargement (Heerfordt syndrome), not pustular lesions. **NEET-PG High-Yield Pearls:** * **Most common oral lesion in IBD:** Aphthous ulcers (seen in both UC and Crohn’s). * **Most specific oral lesion for UC:** Pyostomatitis vegetans. * **Skin counterpart:** Pyoderma gangrenosum (associated with UC) and Erythema nodosum (more common in Crohn’s). * **Histology of PV:** Intraepithelial abscesses filled with **eosinophils** and neutrophils.

Q: A 45-year-old man with a history of chronic alcoholism presents to the emergency department with hematemesis. He denies any prior symptoms of nausea, vomiting, or NSAID use. On examination, his blood pressure is 94/73 mm Hg, heart rate is 110/min, and he has signs of chronic liver disease. Following resuscitation with IV fluids, urgent endoscopy reveals findings suggestive of a specific diagnosis. Which of the following is the most likely diagnosis?

Esophageal varices. ***Esophageal varices*** - **Chronic alcoholism** leads to **cirrhosis** and **portal hypertension**, causing **collateral circulation** through esophageal veins that become **dilated varices**. - **Hematemesis** with **hypotension** and **tachycardia** in a patient with **signs of chronic liver disease** strongly suggests **variceal bleeding**, which is a life-threatening emergency. *Esophageal carcinoma* - Typically presents with **progressive dysphagia** and **weight loss** over months, not acute hematemesis. - More common in patients with **smoking history** or **Barrett's esophagus**, and usually affects older patients without necessarily having liver disease. *Foreign body* - Would have a clear **history of ingestion** and typically causes **odynophagia** or **chest pain**. - **Hematemesis** from foreign bodies is uncommon unless there's significant **mucosal trauma** with a witnessed ingestion event. *Tertiary waves* - These are **non-peristaltic contractions** seen in **esophageal motility disorders** like **achalasia** or **diffuse esophageal spasm**. - Do not cause **hematemesis** and are typically associated with **dysphagia** and **chest pain**, not bleeding.

Q: Non-tropical sprue is characterized by?

Poor absorption of lipids. **Explanation:** **Non-tropical sprue**, also known as **Celiac Disease** or gluten-sensitive enteropathy, is an immune-mediated inflammatory disorder triggered by the ingestion of gluten. **Why Option D is correct:** The hallmark of non-tropical sprue is immune-mediated damage to the small intestinal mucosa, leading to **villous atrophy** and crypt hyperplasia. This destruction significantly reduces the surface area available for nutrient absorption. Since lipid digestion and absorption are complex processes requiring a large surface area and intact mucosal enzymes, **malabsorption of lipids (steatorrhea)** is a primary clinical feature. Patients typically present with foul-smelling, bulky, oily stools. **Why the other options are incorrect:** * **Option A:** In non-tropical sprue, there is **blunting or total atrophy** of the villi, not elongation. Elongation occurs in the crypts (crypt hyperplasia) as a compensatory mechanism. * **Option B:** **Currant jelly stools** are characteristic of **Intussusception**, caused by the mixture of mucus and blood. * **Option C:** Patients with malabsorption typically present with **hypolipidemia** (low cholesterol and triglycerides) because they cannot absorb dietary fats. **High-Yield Clinical Pearls for NEET-PG:** * **Gold Standard Diagnosis:** Small intestinal biopsy showing villous atrophy, crypt hyperplasia, and increased intraepithelial lymphocytes (Marsh Criteria). * **Serology:** Anti-tissue transglutaminase (anti-tTG) IgA is the screening drug of choice. Anti-endomysial antibody (EMA) is the most specific. * **Genetic Association:** Strongly linked with **HLA-DQ2** (95%) and **HLA-DQ8**. * **Associated Condition:** Dermatitis herpetiformis (itchy, bullous skin lesions). * **Malignancy Risk:** Increased risk of Enteropathy-associated T-cell lymphoma (EATL).

Q: Which is the best method for the diagnosis of small intestinal mucosal disease?

Small intestinal mucosal biopsy. The diagnosis of small intestinal mucosal disease (such as Celiac disease, Whipple’s disease, or Tropical sprue) requires direct visualization and histological assessment. **Small intestinal mucosal biopsy** is the gold standard because it allows for the definitive identification of characteristic pathological changes like villous atrophy, crypt hyperplasia, and intraepithelial lymphocytosis [1]. With the advent of endoscopy (OGD scopy), biopsies can be precisely taken from the second part of the duodenum (D2) [2]. **Analysis of Incorrect Options:** * **A. Small bowel series (Barium):** This is a radiological study useful for detecting structural abnormalities (strictures, fistulas, or diverticula) but lacks the sensitivity to detect microscopic mucosal changes [3]. * **B. Urinary D-xylose test:** This is a functional test for carbohydrate malabsorption. While it helps differentiate mucosal malabsorption from pancreatic insufficiency, it cannot provide a specific histological diagnosis. * **D. Breath hydrogen test:** This is used primarily to diagnose Small Intestinal Bacterial Overgrowth (SIBO) or lactose intolerance. It measures gas produced by bacterial metabolism rather than assessing mucosal integrity. **NEET-PG High-Yield Pearls:** * **Gold Standard:** Biopsy is the definitive test for Celiac disease (Marsh Classification) [1]. * **Site of Biopsy:** Usually the distal duodenum or proximal jejunum [2]. * **Whipple’s Disease:** Biopsy shows PAS-positive macrophages. * **Celiac Disease:** Biopsy shows "flat" mucosa with villous atrophy [1]. * **D-Xylose Fact:** It remains normal in pancreatic insufficiency but is decreased in mucosal diseases (e.g., Celiac).

Q: A 25-year-old male presents with pigmented macules on his palms, soles, and oral mucosa. He also has anemia and abdominal pain. What is the most probable diagnosis?

Peutz-Jeghers syndrome. **Explanation:** The clinical triad of **mucocutaneous pigmentation**, **gastrointestinal polyposis**, and **anemia** is classic for **Peutz-Jeghers Syndrome (PJS)**. It is an autosomal dominant disorder caused by a mutation in the **STK11 (LKB1)** gene. 1. **Why Option C is correct:** The hallmark is melanocytic macules (lentigines) appearing in early childhood on the lips, buccal mucosa (most specific), palms, and soles. Unlike common freckles, these do not fade with sun exposure. The abdominal pain and anemia are due to intestinal hamartomatous polyps, which can cause chronic occult bleeding or intussusception. 2. **Why other options are incorrect:** * **Albright’s Syndrome (McCune-Albright):** Characterized by large, unilateral "Café-au-lait" spots with irregular "Coast of Maine" borders, polyostotic fibrous dysplasia, and precocious puberty. It does not involve oral mucosal pigmentation. * **Cushing’s Syndrome:** Presents with systemic features like moon facies, buffalo hump, and purple striae. While hyperpigmentation can occur in ACTH-dependent cases, it is generalized rather than localized to the palms/soles/mucosa. * **Incontinentia Pigmenti:** An X-linked dominant condition that follows the Lines of Blaschko. It progresses through four stages (vesicular, verrucous, hyperpigmented, and atrophic) and typically affects females, as it is lethal in males. **NEET-PG High-Yield Pearls:** * **Most common site for PJS polyps:** Small intestine (specifically the jejunum). * **Malignancy Risk:** Patients have a significantly increased risk of GI and extra-GI cancers (breast, pancreas, ovary, and testis). * **Differential Diagnosis:** Laugier-Hunziker syndrome also presents with oral and acral pigmentation but lacks the systemic GI polyposis.

Q: A man presents with weakness, pain in the upper abdomen, hyperpigmentation, arthritis, hyperglycemia, and an enlarged palpable liver. What is the most probable diagnosis?

Hemochromatosis. ### Explanation The clinical presentation described is the classic "Bronze Diabetes" triad, which is hallmark for **Hereditary Hemochromatosis** [1]. **1. Why Hemochromatosis is Correct:** Hemochromatosis is an autosomal recessive disorder (most commonly the **HFE gene mutation**) leading to excessive iron absorption [1]. Iron deposits in various organs, causing multi-system damage: * **Liver:** Iron deposition leads to hepatomegaly, cirrhosis, and increased risk of Hepatocellular Carcinoma (HCC) [1]. * **Pancreas:** Damage to beta cells causes **Hyperglycemia/Diabetes Mellitus** [1]. * **Skin:** Iron deposition and increased melanin production cause **Hyperpigmentation** (bronzing) [1]. * **Joints:** Calcium pyrophosphate deposition leads to **Arthritis** (typically involving the 2nd and 3rd metacarpophalangeal joints). * **Heart:** Can lead to restrictive or dilated cardiomyopathy. **2. Why Other Options are Incorrect:** * **Addison’s Disease:** While it causes hyperpigmentation and weakness, it typically presents with **hypotension and hypoglycemia**, not hyperglycemia or hepatomegaly. * **Insulin Dependent Diabetes Mellitus (IDDM):** Explains the hyperglycemia but does not account for hepatomegaly, arthritis, or skin bronzing. * **Cushing’s Syndrome:** Presents with hyperglycemia and weakness, but features include central obesity, striae, and "moon facies" rather than hyperpigmentation and arthritis. **3. NEET-PG High-Yield Pearls:** * **Gold Standard Diagnosis:** Liver biopsy with **Prussian Blue staining** (quantifies hepatic iron index) [2]. * **Screening Test:** Transferrin saturation (>45% is highly suggestive). * **Treatment of Choice:** Therapeutic Phlebotomy (maintains Ferritin ~50 ng/mL) [2]. * **Classic Joint Finding:** "Hook-like" osteophytes on X-ray of the MCP joints. * **Most Common Cause of Death:** Decompensated Cirrhosis or HCC.

Question 1

A 50-year-old male presented with a history of hematemesis of 500ml of blood. On examination, his BP was 90/60 mmHg, PR was 110 bpm, and he had splenomegaly 5 cm below the lower costal margin. What is the most probable diagnosis?

Accepted Answer

Portal hypertension

Answer

Mallory-Weiss tear

Answer

Duodenal ulcer

Answer

Gastritis

Question 2

Thickened gastric folds are not seen in which of the following conditions?

Accepted Answer

Peptic ulcer disease

Answer

Carcinoma stomach

Answer

Menetrier disease

Answer

Eosinophilic gastritis

Question 3

Which oral lesion is associated with ulcerative colitis?

Accepted Answer

Pyostomatitis vegetans

Answer

Pemphigus

Answer

Scleroderma

Answer

Sarcoidosis

Question 4

Regarding hepatic encephalopathy, evaluate the following five statements as TRUE or FALSE:

Statement 1: Ammonia is the primary toxin implicated in hepatic encephalopathy; it crosses the blood-brain barrier and is converted to glutamine by astrocytes, causing astrocyte swelling.

Statement 2: Cerebral edema is a recognised complication of acute hepatic encephalopathy.

Statement 3: MRI of the brain in hepatic encephalopathy characteristically shows T1 hyperintensity in the basal ganglia due to manganese deposition.

Statement 4: EEG in hepatic encephalopathy characteristically shows generalised slowing of background activity.

Statement 5: Gastrointestinal bleeding is one of the most common precipitating factors of hepatic encephalopathy.

Which of the following correctly identifies the TRUE and FALSE statements?

Accepted Answer

Statements 1, 2, 3, 4, and 5 are all True.

Answer

Statements 1, 2, and 3 are True, while Statements 4 and 5 are False.

Answer

Statements 1, 3, 4, and 5 are True, while Statement 2 is False.

Answer

Statements 1 and 5 are True, while Statements 2, 3, and 4 are False.

Question 5

A 45-year-old man with a history of chronic alcoholism presents to the emergency department with hematemesis. He denies any prior symptoms of nausea, vomiting, or NSAID use. On examination, his blood pressure is 94/73 mm Hg, heart rate is 110/min, and he has signs of chronic liver disease. Following resuscitation with IV fluids, urgent endoscopy reveals findings suggestive of a specific diagnosis. Which of the following is the most likely diagnosis?

Accepted Answer

Esophageal varices

Answer

Esophageal carcinoma

Answer

Foreign body

Answer

Tertiary waves

Question 6

Which of the following conditions does not cause secretory diarrhea?

Accepted Answer

Somatostatinoma

Answer

Medullary carcinoma of the thyroid

Answer

Carcinoid syndrome

Answer

Zollinger-Ellison syndrome

Question 7

Non-tropical sprue is characterized by?

Accepted Answer

Poor absorption of lipids

Answer

Elongation of intestinal villi

Answer

Currant jelly stools

Answer

Hypertriglyceridemia

Question 8

Which is the best method for the diagnosis of small intestinal mucosal disease?

Accepted Answer

Small intestinal mucosal biopsy

Answer

Small bowel series using barium contrast

Answer

Urinary D-xylose test

Answer

Breath hydrogen test

Question 9

A 25-year-old male presents with pigmented macules on his palms, soles, and oral mucosa. He also has anemia and abdominal pain. What is the most probable diagnosis?

Accepted Answer

Peutz-Jeghers syndrome

Answer

Albright's syndrome

Answer

Cushing's syndrome

Answer

Incontinentia pigmenti

Question 10

A man presents with weakness, pain in the upper abdomen, hyperpigmentation, arthritis, hyperglycemia, and an enlarged palpable liver. What is the most probable diagnosis?

Accepted Answer

Hemochromatosis

Answer

Addison's disease

Answer

Insulin Dependent Diabetes Mellitus

Answer

Cushing's syndrome

Gastroenterology — MCQs

Gastroenterology — MCQs

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