Gastroenterology Practice Questions

Q: Which of the following statements about watermelon stomach is false?

Dilated veins are present in the fundus.. **Explanation:** **Watermelon Stomach**, medically known as **Gastric Antral Vascular Ectasia (GAVE)**, is a distinct cause of chronic gastrointestinal bleeding. **Why Option D is the correct (False) statement:** The hallmark of GAVE is the presence of dilated, tortuous mucosal capillaries and fibrin thrombi specifically in the **antrum** of the stomach, not the fundus. Endoscopically, these appear as longitudinal erythematous streaks radiating from the pylorus, resembling the stripes on a watermelon. In contrast, dilated veins in the fundus are characteristic of **gastric varices**, usually secondary to portal hypertension or splenic vein thrombosis. **Analysis of other options:** * **Option A:** GAVE is statistically more common in **females** (often elderly) and is frequently associated with systemic sclerosis (scleroderma) and autoimmune diseases. * **Option B:** It is a well-known cause of **upper GI bleeding**, typically presenting as chronic occult blood loss leading to iron deficiency anemia, though acute hematemesis can occur. * **Option C:** **Argon Plasma Coagulation (APC)** is the first-line endoscopic treatment. It is effective in cauterizing the superficial ectatic vessels to reduce transfusion requirements. **High-Yield Clinical Pearls for NEET-PG:** * **Association:** 30% of cases are associated with **Liver Cirrhosis**, but the majority are associated with **Systemic Sclerosis**. * **Histology:** Characterized by vascular ectasia of mucosal capillaries, focal thrombosis, and **spindle cell proliferation** in the lamina propria. * **Differential Diagnosis:** Often confused with portal hypertensive gastropathy (PHG). However, PHG usually affects the fundus/body and has a "mosaic" or "snake-skin" appearance, whereas GAVE affects the antrum. * **Refractory Cases:** If endoscopic therapy fails, antrectomy may be considered.

Q: Mallory-Weiss syndrome is commonly associated with which of the following patient populations?

Chronic alcoholic patients. **Explanation:** **Mallory-Weiss Syndrome (MWS)** is characterized by non-transmural, longitudinal mucosal lacerations at the gastroesophageal junction or gastric cardia. **Why Option A is correct:** The primary pathophysiology involves a sudden, massive increase in intra-abdominal pressure. This is most commonly triggered by **forceful vomiting, retching, or coughing**. Chronic alcoholic patients are the most frequently associated population because they often experience bouts of binge drinking followed by severe vomiting (emesis). Alcohol also acts as a local irritant to the gastric mucosa, making it more susceptible to injury. **Why the other options are incorrect:** * **Option B (Smokers):** While smoking is a risk factor for peptic ulcer disease and esophageal cancer, it does not acutely cause the mechanical pressure changes required for MWS. * **Option C (Benzene therapy):** Benzene exposure is classically associated with hematological malignancies like Acute Myeloid Leukemia (AML), not acute gastrointestinal mucosal tears. * **Option D (Bladder carcinoma):** There is no direct pathophysiological link between bladder cancer and gastroesophageal junction tears. **NEET-PG High-Yield Pearls:** * **Clinical Presentation:** Patients typically present with **painless hematemesis** following an episode of non-bloody vomiting or retching. * **Diagnosis:** The gold standard for diagnosis is **Upper GI Endoscopy**, which reveals longitudinal mucosal streaks. * **Management:** Most cases (80-90%) are self-limiting and stop bleeding spontaneously. Active bleeding is managed endoscopically with epinephrine injection, clipping, or thermal coagulation. * **Distinction:** Do not confuse MWS with **Boerhaave Syndrome**, which is a *transmural* (full-thickness) esophageal perforation presenting with severe chest pain and subcutaneous emphysema (Mackler’s triad).

Q: A patient complaining of difficulty of swallowing of solid foods is suffering from all of the following except:

Bulbar palsy. ### Explanation The key to answering this question lies in distinguishing between **mechanical/structural dysphagia** and **neuromuscular (oropharyngeal) dysphagia** [1]. **Why Bulbar Palsy is the Correct Answer:** Bulbar palsy involves the lower motor neurons of the cranial nerves (IX, X, XI, and XII). This leads to **oropharyngeal dysphagia**, which is characterized by difficulty in initiating the swallow and an inability to propel the food bolus from the pharynx into the esophagus. In neuromuscular disorders like bulbar palsy, patients typically experience more difficulty with **liquids** than solids, often leading to nasal regurgitation or tracheal aspiration [1]. **Analysis of Incorrect Options:** * **Esophageal Carcinoma:** This is a classic example of **mechanical obstruction** [1]. It presents with progressive dysphagia, initially for **solids** and later for liquids as the lumen narrows [1]. * **Achalasia Cardia & Diffuse Esophageal Spasm (DES):** These are **motility disorders** of the esophageal body [2]. In these conditions, dysphagia occurs for **both solids and liquids** [2] simultaneously from the onset. Since the question asks which conditions involve difficulty with solids, these are excluded as they definitely involve solid-food dysphagia. **Clinical Pearls for NEET-PG:** * **Solids only:** Suggests a mechanical/structural obstruction (e.g., Peptic stricture, Carcinoma, Esophageal web) [1]. * **Solids and Liquids (simultaneous):** Suggests a motility disorder (e.g., Achalasia, DES, Scleroderma) [2]. * **Liquids > Solids:** Suggests a neurological/oropharyngeal cause (e.g., Bulbar palsy, Myasthenia Gravis) [1]. * **Bird’s Beak appearance:** Classic radiological sign for Achalasia Cardia on Barium Swallow. * **Corkscrew Esophagus:** Classic radiological sign for Diffuse Esophageal Spasm [2].

Q: All of the following are true regarding chronic active hepatitis, except?

Progression to cirrhosis is not seen. Explanation: Chronic Active Hepatitis (CAH), particularly the autoimmune subtype, is a progressive inflammatory condition of the liver. The correct answer is **Option B** because the hallmark of chronic active hepatitis is its potential to progress to **macronodular cirrhosis** and liver failure if left untreated [1]. * **Why Option B is the correct answer:** The statement "Progression to cirrhosis is not seen" is false. In CAH, persistent "piecemeal necrosis" (interface hepatitis) and bridging necrosis lead to progressive fibrosis, eventually resulting in cirrhosis in a significant percentage of patients [1]. * **Why Option A is incorrect:** Autoimmune CAH shows a strong female predilection (female to male ratio of approximately 4:1), typically affecting young to middle-aged women [2]. * **Why Option C is incorrect:** Corticosteroids (e.g., Prednisolone) are the mainstay of treatment [1]. They induce clinical, biochemical, and histological remission in about 80% of patients, often used in combination with Azathioprine [1]. * **Why Option D is incorrect:** CAH is frequently associated with other autoimmune conditions such as Hashimoto’s thyroiditis, Rheumatoid Arthritis, Type 1 Diabetes, and Sjögren’s syndrome [2]. **High-Yield Clinical Pearls for NEET-PG:** * **Serology:** Type 1 CAH is associated with **ANA** (Anti-Nuclear Antibody) and **ASMA** (Anti-Smooth Muscle Antibody). Type 2 is associated with **Anti-LKM1** (Liver Kidney Microsomal) antibodies. * **Histology:** The characteristic finding is **Interface Hepatitis** (inflammatory infiltrate crossing the limiting plate) [1]. * **Hypergammaglobulinemia:** A classic biochemical feature is a selective increase in IgG levels [1].

Q: All of the following metabolic disorders may cause chronic or recurrent abdominal pain, except:

Hyperkalemia. **Explanation:** Abdominal pain is a common manifestation of several metabolic and endocrine disorders. Understanding the underlying pathophysiology is crucial for differentiating these from surgical emergencies. **Why Hyperkalemia is the correct answer:** Hyperkalemia (elevated serum potassium) primarily affects cardiac conduction and neuromuscular excitability. While it can cause muscle weakness or cardiac arrhythmias, it is **not** a recognized cause of chronic or recurrent abdominal pain. In contrast, **Hypokalemia** can cause abdominal symptoms by inducing paralytic ileus. **Analysis of Incorrect Options:** * **Acute Intermittent Porphyria (AIP):** This is a classic "medical" cause of severe abdominal pain. The pain is neurovisceral, often out of proportion to physical findings, and is frequently accompanied by vomiting, constipation, and neuropsychiatric symptoms [1]. * **Addison’s Disease (Adrenal Insufficiency):** Acute adrenal crisis or chronic insufficiency often presents with vague but severe abdominal pain, nausea, and vomiting. This can mimic an "acute abdomen" and is often associated with hyponatremia and hyperkalemia. * **Hypercalcemia:** Known by the classic mnemonic "Stones, Bones, Abdominal Groans, and Psychic Overtones," hypercalcemia causes abdominal pain through increased gastric acid secretion, constipation, or by triggering **acute pancreatitis**. **NEET-PG High-Yield Pearls:** * **Metabolic causes of abdominal pain:** Lead poisoning, C1 esterase inhibitor deficiency (Hereditary Angioedema), Diabetic Ketoacidosis (DKA), and Uremia [2]. * **AIP Diagnosis:** Look for "port-wine colored urine" (due to porphobilinogen) and elevated urinary PBG levels [1]. * **Clinical Tip:** Always consider a metabolic cause if the patient has severe abdominal pain but a "soft," non-tender abdomen on examination.

Q: Arias syndrome is also known as:

Crigler Najjar syndrome type II. **Explanation:** **Crigler-Najjar Syndrome Type II (CNS-II)**, also known as **Arias Syndrome**, is an autosomal dominant disorder characterized by a partial deficiency of the enzyme **UDP-glucuronosyltransferase (UGT1A1)**. This enzyme is responsible for conjugating bilirubin in the liver. In Arias syndrome, enzyme activity is typically <10% of normal, leading to moderate non-hemolytic unconjugated hyperbilirubinemia (bilirubin levels usually 6–20 mg/dL). Unlike Type I, patients with Arias syndrome usually survive into adulthood without neurological damage and respond well to **Phenobarbital**, which induces the remaining enzyme activity. **Analysis of Incorrect Options:** * **Crigler-Najjar Syndrome Type I:** This is a more severe, autosomal recessive condition where UGT1A1 activity is **completely absent**. It presents with very high bilirubin levels (>20 mg/dL) and a high risk of kernicterus. It does *not* respond to Phenobarbital. * **Rotor Syndrome & Dubin-Johnson Syndrome:** These are causes of **conjugated (direct) hyperbilirubinemia**. They involve defects in the storage or excretion of bilirubin into the bile, rather than conjugation defects. Dubin-Johnson is specifically characterized by a "black liver" due to melanin-like pigment deposition. **High-Yield Clinical Pearls for NEET-PG:** * **Phenobarbital Test:** Used to differentiate CNS-I from CNS-II. Bilirubin levels drop significantly in CNS-II (Arias Syndrome) but remain unchanged in CNS-I. * **Gilbert Syndrome:** The most common hereditary hyperbilirubinemia; it involves a mild reduction in UGT1A1 activity (~30% of normal) and presents with intermittent jaundice triggered by stress or fasting. * **Inheritance:** CNS-I is Autosomal Recessive; CNS-II (Arias) is usually Autosomal Dominant.

Q: Acute hepatocellular failure in a patient with cirrhosis of the liver is most commonly precipitated by which of the following?

Upper gastrointestinal bleeding. In a patient with compensated cirrhosis, the liver exists in a state of fragile equilibrium. **Upper gastrointestinal (UGI) bleeding** is the most common and potent precipitant of acute-on-chronic liver failure (ACLF). The mechanism is multifactorial: 1. **Hypovolemia:** Massive blood loss leads to decreased hepatic perfusion and ischemic injury to already compromised hepatocytes [1]. 2. **Nitrogen Load:** Blood in the gut is a massive protein load. Bacteria break down this blood into ammonia and other nitrogenous toxins, which are absorbed into the systemic circulation, frequently triggering hepatic encephalopathy [2]. 3. **Infection Risk:** UGI bleeding significantly increases the risk of spontaneous bacterial peritonitis (SBP), further worsening liver function. **Analysis of Incorrect Options:** * **B. Large carbohydrate meal:** While high-protein meals can trigger encephalopathy, carbohydrate meals do not cause hepatocellular failure. In fact, glucose is often administered to prevent hypoglycemia in liver failure. * **C. Portal vein thrombosis (PVT):** While PVT can cause portal hypertension and variceal bleeding, it is a less frequent primary precipitant of acute failure compared to the direct hemodynamic and metabolic insult of an active bleed [3]. * **D. Intravenous albumin infusion:** This is actually a **treatment** for complications of cirrhosis (like SBP or hepatorenal syndrome) as it expands plasma volume and has antioxidant properties [4]. **NEET-PG High-Yield Pearls:** * **Most common cause of UGI bleed in cirrhosis:** Esophageal varices. * **Prophylaxis:** All cirrhotic patients with UGI bleed must receive prophylactic antibiotics (usually Ceftriaxone) to improve survival. * **Other common precipitants of ACLF:** Infections (SBP), alcohol binge, and hepatotoxic drugs (NSAIDs).

Q: A 32-year-old woman presents with several months of burning substernal chest pain exacerbated by large meals, cigarettes, and caffeine. Her symptoms are worse when she lies supine, especially when sleeping at night. Antacids often improve her symptoms. This patient is at risk for which of the following conditions?

Columnar metaplasia of the distal esophagus. ### Explanation **1. Why the Correct Answer is Right:** The patient presents with classic symptoms of **Gastroesophageal Reflux Disease (GERD)**: substernal burning (heartburn), symptoms triggered by large meals, caffeine, and smoking, and worsening when supine (nocturnal reflux). Chronic exposure of the distal esophageal mucosa to gastric acid leads to a compensatory change where the normal stratified squamous epithelium is replaced by **columnar epithelium** (intestinal metaplasia). This condition is known as **Barrett’s Esophagus**. It is a premalignant condition that significantly increases the risk of **Esophageal Adenocarcinoma**. **2. Why the Incorrect Options are Wrong:** * **A. Cardiac Ischemia:** While GERD can mimic "atypical chest pain," the clear association with meals, posture, and relief with antacids strongly points toward a GI etiology rather than myocardial ischemia. * **C. Mallory-Weiss Lesion:** This refers to longitudinal mucosal lacerations at the gastroesophageal junction, typically caused by forceful vomiting or retching (e.g., in alcoholism or bulimia), not chronic acid reflux. * **D. Squamous Cell Carcinoma (SCC):** While GERD is a major risk factor for Adenocarcinoma, it is **not** a risk factor for SCC. SCC is associated with smoking, alcohol, hot liquids, and achalasia. **3. Clinical Pearls for NEET-PG:** * **Gold Standard Diagnosis:** 24-hour ambulatory pH monitoring is the most sensitive test for GERD. * **Endoscopy:** Indicated in patients with "alarm symptoms" (dysphagia, weight loss, anemia) or long-standing GERD (>5 years) to screen for Barrett’s. * **Histology of Barrett’s:** Presence of **Goblet cells** is the hallmark of intestinal metaplasia. * **Management:** Lifestyle modifications and Proton Pump Inhibitors (PPIs) are first-line. Nissen Fundoplication is the surgical treatment of choice.

Question 1

Which of the following statements about watermelon stomach is false?

Accepted Answer

Dilated veins are present in the fundus.

Answer

Watermelon stomach is more common in females.

Answer

It causes upper gastrointestinal bleeding.

Answer

Treatment involves argon plasma photocoagulation.

Question 2

Mallory-Weiss syndrome is commonly associated with which of the following patient populations?

Accepted Answer

Chronic alcoholic patients

Answer

Smokers

Answer

Patients undergoing occupational benzene therapy

Answer

Patients with bladder carcinoma

Question 3

A patient complaining of difficulty of swallowing of solid foods is suffering from all of the following except:

Accepted Answer

Bulbar palsy

Answer

Diffuse esophageal spasm

Answer

Achalasia cardia

Answer

Esophageal carcinoma

Question 4

All of the following are true regarding chronic active hepatitis, except?

Accepted Answer

Progression to cirrhosis is not seen

Answer

Common in females

Answer

Remission with steroids

Answer

May associate with autoimmune disease

Question 5

All of the following metabolic disorders may cause chronic or recurrent abdominal pain, except:

Accepted Answer

Hyperkalemia

Answer

Acute intermittent porphyria

Answer

Addison's disease

Answer

Hypercalcemia

Question 6

Arias syndrome is also known as:

Accepted Answer

Crigler Najjar syndrome type II

Answer

Rotor syndrome

Answer

Dubin Johnson syndrome

Answer

Crigler Najjar syndrome type I

Question 7

A young male was found to be HBsAg positive and HBeAg negative with normal liver enzymes. What is the next step in management?

Accepted Answer

Serial monitoring

Answer

Lamivudine therapy

Answer

Lamivudine plus Interferon therapy

Answer

Interferon therapy

Question 8

Acute hepatocellular failure in a patient with cirrhosis of the liver is most commonly precipitated by which of the following?

Accepted Answer

Upper gastrointestinal bleeding

Answer

Large carbohydrate meal

Answer

Portal vein thrombosis

Answer

Intravenous albumin infusion

Question 9

A 32-year-old woman presents with several months of burning substernal chest pain exacerbated by large meals, cigarettes, and caffeine. Her symptoms are worse when she lies supine, especially when sleeping at night. Antacids often improve her symptoms. This patient is at risk for which of the following conditions?

Accepted Answer

Columnar metaplasia of the distal esophagus

Answer

Cardiac ischemia

Answer

Mallory-Weiss lesion in the esophagus

Answer

Squamous cell carcinoma

Question 10

Routine second look endoscopy in the setting of non-variceal upper GI bleeding is recommended in patients with which of the following characteristics?

Accepted Answer

Lesion treated with epinephrine injection alone

Answer

Rockall score of 2

Answer

Cardiac disease

Answer

Renal disease

Gastroenterology — MCQs

Gastroenterology — MCQs

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