Gastroenterology Practice Questions

Q: Which of the following conditions leads to the endoscopic appearance shown in the image?

Gastric antral vascular ectasia. ***Gastric antral vascular ectasia*** - Shows characteristic **"watermelon stomach"** appearance with longitudinal **red stripes** or streaks in the **gastric antrum** on endoscopy. - Associated with **chronic bleeding** and **iron deficiency anemia**, commonly seen in elderly patients with **cirrhosis** or **chronic kidney disease**. *Intestinal lymphangiectasia* - Presents with **white villi** and **dilated lymphatics** giving a **"white shag carpet"** appearance on **small bowel** endoscopy. - Causes **protein-losing enteropathy** with **hypoproteinemia** and **lymphedema**, not the striped gastric pattern shown. *Amoebic colitis* - Shows **flask-shaped ulcers** with **undermined edges** and **yellow-white exudate** in the **colon**. - Associated with **Entamoeba histolytica** infection causing **bloody diarrhea** and **right lower quadrant pain**. *Necrotising enterocolitis* - Characterized by **bowel wall thickening**, **pneumatosis intestinalis**, and **mucosal necrosis** primarily in **premature neonates**. - Shows **ischemic changes** with **black, necrotic tissue** rather than the vascular striped pattern of GAVE.

Q: A 65-year-old male presents with abdominal pain and distension. He reports maroon-colored stools and has a past medical history of cerebrovascular accident and myocardial infarction. What is the most probable diagnosis?

Acute mesenteric ischemia. The clinical presentation of a 65-year-old patient with sudden abdominal pain, distension, and **maroon-colored stools** (hematochezia/melena) in the context of extensive cardiovascular disease (CVA and MI) is a classic description of **Acute Mesenteric Ischemia (AMI)** [1]. **Why Option B is Correct:** AMI is caused by a sudden reduction in intestinal blood flow, most commonly due to an arterial embolism or thrombosis [1]. This patient has significant risk factors (history of MI and CVA), suggesting an underlying pro-thrombotic state or atrial fibrillation, which can lead to an embolic event in the Superior Mesenteric Artery (SMA). Maroon stools indicate mucosal sloughing and infarction of the bowel wall [1]. **Why Other Options are Incorrect:** * **Options A & D (Ulcerative Colitis/Crohn’s Disease):** While IBD can cause abdominal pain and bloody stools, it typically presents in younger patients with a chronic, relapsing history and constitutional symptoms (weight loss, fever), rather than a sudden onset in an elderly patient with vascular risk factors. * **Option C (Irritable Bowel Syndrome):** IBS is a functional disorder characterized by chronic pain and altered bowel habits. It never causes maroon stools or acute abdominal distension and is a diagnosis of exclusion. **High-Yield Clinical Pearls for NEET-PG:** * **Classic Triad:** Severe abdominal pain "out of proportion" to physical examination findings. * **Gold Standard Investigation:** CT Angiography (CTA). * **Early Sign on X-ray:** Usually normal; late sign is *Pneumatosis intestinalis* (gas in the bowel wall). * **Metabolic Hallmark:** Anion gap metabolic acidosis with elevated serum lactate due to tissue ischemia.

Q: A 45-year-old male complains of weakness. He is obese, a type 2 diabetic, and hypertensive. General examination reveals hepatomegaly. Icterus is visible on the sclera, and pale coloration of the skin is present. Which of the following liver diseases can be seen in this patient?

Nonalcoholic fatty liver disease (NAFLD). ### Explanation **1. Why Nonalcoholic Fatty Liver Disease (NAFLD) is Correct:** The patient presents with the classic **Metabolic Syndrome** profile: obesity, Type 2 Diabetes Mellitus (T2DM), and hypertension. NAFLD is considered the hepatic manifestation of metabolic syndrome [1]. The underlying pathophysiology is **insulin resistance**, which leads to increased lipolysis and the accumulation of triglycerides within hepatocytes (steatosis). Hepatomegaly is a common finding due to fat deposition. While NAFLD is often asymptomatic, advanced stages like Non-alcoholic Steatohepatitis (NASH) can present with jaundice (icterus) and fatigue (weakness) as liver function declines [2]. **2. Why Other Options are Incorrect:** * **Alcoholic Fatty Liver Disease (AFLD) & Alcoholic Hepatitis:** While the clinical presentation of AFLD/Alcoholic Hepatitis can be identical to NAFLD/NASH, there is no history of significant alcohol consumption provided in the vignette [2]. In the presence of strong metabolic risk factors (Diabetes, Obesity), NAFLD is the most likely diagnosis unless alcohol abuse is specified. * **All of the Above:** This is incorrect because the patient's specific comorbidities (T2DM and Obesity) point directly toward a metabolic etiology rather than an alcoholic one. **3. Clinical Pearls for NEET-PG:** * **Gold Standard Diagnosis:** Liver biopsy is the gold standard to differentiate simple steatosis from NASH (look for **Mallory-Denk bodies** and **ballooning degeneration**) [3]. * **First-line Investigation:** Ultrasonography is the initial screening tool of choice. * **Association:** NAFLD is now the most common cause of incidental elevation of liver enzymes and a rising cause of Cryptogenic Cirrhosis. * **Management:** Weight loss (7-10%) and Pioglitazone or Vitamin E (in non-diabetic NASH) are high-yield management points.

Q: A 62-year-old man is admitted with abdominal pain and weight loss of 5 lb over the past month. He has continued to consume large amounts of rum. Examination reveals icteric sclera. The indirect bilirubin level is 5.6 mg/dL with a total bilirubin of 6 mg/dL. An ultrasound shows a 4-cm pseudocyst. What is the most likely cause of jaundice in a patient with alcoholic pancreatitis?

Alcoholic hepatitis. **Explanation:** The key to solving this clinical scenario lies in analyzing the **bilirubin profile**. The patient has a total bilirubin of 6 mg/dL, of which 5.6 mg/dL is **indirect (unconjugated) bilirubin**. 1. **Why Alcoholic Hepatitis is correct:** In a patient with a history of heavy alcohol consumption ("large amounts of rum"), jaundice characterized by a predominant rise in indirect bilirubin suggests hepatocellular dysfunction or hemolysis rather than biliary obstruction. Alcoholic hepatitis causes hepatic parenchymal inflammation, impairing the liver's ability to conjugate bilirubin, leading to unconjugated hyperbilirubinemia. 2. **Why other options are incorrect:** * **Pancreatic Pseudocyst & Carcinoma of the Pancreas:** Both these conditions cause jaundice via **extrahepatic biliary obstruction** (compression of the common bile duct). Obstructive jaundice characteristically presents with a rise in **direct (conjugated) bilirubin** and alkaline phosphatase. * **Intrahepatic Cyst:** While these can cause localized issues, they rarely cause significant jaundice unless they are massive or multiple (e.g., Polycystic Liver Disease), and even then, the pattern would likely be obstructive. **Clinical Pearls for NEET-PG:** * **Bilirubin Rule:** Direct hyperbilirubinemia = Post-hepatic/Obstructive cause; Indirect hyperbilirubinemia = Pre-hepatic (Hemolysis) or Hepatic (Conjugation failure). * **Pseudocyst Management:** Most pseudocysts in chronic pancreatitis are managed conservatively unless symptomatic or complicated (infection, hemorrhage, or obstruction). * **Alcoholic Hepatitis Ratio:** Look for an **AST:ALT ratio > 2:1** in labs, which is highly suggestive of alcoholic liver disease.

Q: A 45-year-old man with a long history of alcohol intake presents with upper gastrointestinal bleeding. Urgent endoscopy reveals specific findings. Which of the following is the most likely diagnosis?

Esophageal varices. ***Esophageal varices*** - Chronic alcohol intake leads to **cirrhosis** → **portal hypertension** → development of **collateral circulation** including esophageal varices, making this the most likely cause of upper GI bleeding. - Endoscopy typically reveals **dilated, tortuous veins** in the lower esophagus that are prone to rupture and bleeding. *Esophageal carcinoma* - Usually presents with **progressive dysphagia** and **weight loss** over months, not acute upper GI bleeding. - More commonly associated with **smoking** and **Barrett's esophagus** rather than isolated alcohol use. *Foreign body* - Would typically present with **acute onset** symptoms and a clear **history of ingestion**. - Endoscopy would show the **actual foreign object** rather than bleeding varices. *Tertiary esophageal waves* - These are **non-peristaltic contractions** seen in conditions like **achalasia** or **diffuse esophageal spasm**. - They do not cause **bleeding** and are identified by **manometry** rather than endoscopy showing hemorrhage.

Q: A 28-year-old pregnant female complains of hematemesis after an episode of vomiting. An upper GI endoscopy reveals a specific appearance. What is the most common site for this condition?

Just below the gastroesophageal junction. ***Just below the gastroesophageal junction*** - **Mallory-Weiss tears** classically occur at the **gastroesophageal junction** or within 2-3 cm below it, where the esophageal wall is most vulnerable during sudden increases in intra-abdominal pressure. - This location experiences maximum **transmural pressure gradient** during forceful vomiting, making it the most susceptible site for mucosal laceration. *Cardia* - The **gastric cardia** is below the typical site of Mallory-Weiss tears and has a different muscular architecture. - **Boerhaave syndrome** (full-thickness rupture) may involve this area, but **mucosal tears** predominantly occur higher at the GEJ. *Lower third of the esophagus* - While anatomically close, **Mallory-Weiss tears** specifically occur at the **transition zone** rather than the mid-esophageal region. - The lower third lacks the **anatomical weakness** present at the gastroesophageal junction where different muscle fiber orientations meet. *Lesser curvature of the stomach* - This location is associated with **peptic ulcers** rather than **vomiting-induced mucosal tears**. - The **gastric mucosa** is more resistant to pressure changes compared to the delicate **esophageal-gastric junction**.

Q: Which drug is used in the treatment of steroid-resistant ulcerative colitis?

Cyclosporine. **Explanation:** The management of Ulcerative Colitis (UC) follows a step-ladder approach. When a patient presents with **acute severe ulcerative colitis** that fails to respond to intravenous corticosteroids (typically after 3–5 days), the condition is termed **steroid-resistant UC**. 1. **Why Cyclosporine is correct:** Cyclosporine is a calcineurin inhibitor that acts rapidly to induce remission in severe, steroid-refractory cases. It serves as a "rescue therapy" to avoid emergency colectomy. In modern practice, **Infliximab** (a TNF-α inhibitor) is the other primary alternative for this indication. 2. **Why other options are incorrect:** * **Azathioprine (Option A):** While used in UC, it has a slow onset of action (3–6 months). It is used for **maintaining remission** or as a steroid-sparing agent, but it is ineffective for the acute management of steroid-resistant flares. * **5-ASA (Option C):** These (e.g., Sulfasalazine, Mesalamine) are first-line agents for **mild-to-moderate** UC [1]. They are insufficient for severe or steroid-resistant disease [1]. * **Racecadotril (Option D):** This is an enkephalinase inhibitor used as an anti-secretory drug for acute infectious diarrhea; it has no role in the inflammatory process of UC. **High-Yield Clinical Pearls for NEET-PG:** * **Truelove and Witts Criteria:** Used to define "Acute Severe UC" (≥6 bloody stools/day + systemic toxicity). * **Drug of Choice for Maintenance:** Azathioprine (if 5-ASA fails). * **Surgery:** Proctocolectomy with Ileal Pouch-Anal Anastomosis (IPAA) is the definitive curative treatment for UC. * **Monitoring:** When using Cyclosporine, monitor renal function and serum drug levels to prevent nephrotoxicity and neurotoxicity.

Q: Anti-T.T.G. antibodies are seen in which condition?

Gluten enteropathy. **Gluten enteropathy** (Celiac Disease) is an autoimmune-mediated enteropathy triggered by the ingestion of gluten in genetically predisposed individuals (HLA-DQ2/DQ8) [1]. The enzyme **Tissue Transglutaminase (tTG)** plays a central role in the pathogenesis by deamidating gliadin peptides, making them more immunogenic [1]. This leads to the production of **IgA anti-tTG antibodies**, which are the most sensitive and specific serological markers for diagnosis and monitoring treatment adherence. **Analysis of Incorrect Options:** * **A. Giardia malabsorption:** While *Giardia lamblia* causes malabsorption and can mimic the histological features of Celiac disease (villous atrophy), it is an infectious parasitic condition and does not involve autoantibodies. * **C. Lactose deficiency:** This is a biochemical deficiency of the enzyme lactase at the brush border [2]. It leads to osmotic diarrhea but does not involve an immune response or antibody production [2]. * **D. Bile acid malabsorption:** This occurs due to ileal resection or disease (e.g., Crohn’s), leading to secretory diarrhea. It is a physiological failure of the enterohepatic circulation, not an autoimmune process. **High-Yield Clinical Pearls for NEET-PG:** * **Gold Standard Diagnosis:** D2 (distal duodenal) biopsy showing villous atrophy, crypt hyperplasia, and increased intraepithelial lymphocytes (Marsh Criteria) [1]. * **Best Screening Test:** IgA anti-tTG antibody. * **Important Caveat:** Always check **Total Serum IgA levels**; if the patient is IgA deficient (common in Celiac), IgA-based tests will be false negatives, and **IgG-deamidated gliadin peptide (DGP)** should be tested instead. * **Dermatological Association:** Dermatitis herpetiformis (intense pruritic vesicles on extensors).

Question 1

Which of the following conditions leads to the endoscopic appearance shown in the image?

Accepted Answer

Gastric antral vascular ectasia

Answer

Intestinal lymphangiectasia

Answer

Amoebic colitis

Answer

Necrotising enterocolitis

Question 2

A 65-year-old male presents with abdominal pain and distension. He reports maroon-colored stools and has a past medical history of cerebrovascular accident and myocardial infarction. What is the most probable diagnosis?

Accepted Answer

Acute mesenteric ischemia

Answer

Ulcerative colitis

Answer

Irritable bowel syndrome

Answer

Crohn's disease

Question 3

A diabetic patient presents with liver cirrhosis and hyperpigmentation. What is the most likely diagnosis?

Accepted Answer

Hemochromatosis

Answer

Wilson's disease

Answer

Primary sclerosing cholangitis

Answer

Hepatitis B

Question 4

A 45-year-old male complains of weakness. He is obese, a type 2 diabetic, and hypertensive. General examination reveals hepatomegaly. Icterus is visible on the sclera, and pale coloration of the skin is present. Which of the following liver diseases can be seen in this patient?

Accepted Answer

Nonalcoholic fatty liver disease (NAFLD)

Answer

Alcoholic hepatitis

Answer

Alcoholic fatty liver disease (AFLD)

Answer

All of the above

Question 5

Which of the following statements about pleural effusion in cirrhosis is FALSE?

Accepted Answer

Pleural fluid to serum LDH ratio is < 0.6

Answer

Pleural fluid protein is < 10 g/L

Answer

Pleural fluid glucose is > 80 mg/dL

Answer

Pleural fluid specific gravity is < 1.012

Question 6

A 62-year-old man is admitted with abdominal pain and weight loss of 5 lb over the past month. He has continued to consume large amounts of rum. Examination reveals icteric sclera. The indirect bilirubin level is 5.6 mg/dL with a total bilirubin of 6 mg/dL. An ultrasound shows a 4-cm pseudocyst. What is the most likely cause of jaundice in a patient with alcoholic pancreatitis?

Accepted Answer

Alcoholic hepatitis

Answer

Carcinoma of pancreas

Answer

Intrahepatic cyst

Answer

Pancreatic pseudocyst

Question 7

A 45-year-old man with a long history of alcohol intake presents with upper gastrointestinal bleeding. Urgent endoscopy reveals specific findings. Which of the following is the most likely diagnosis?

Accepted Answer

Esophageal varices

Answer

Esophageal carcinoma

Answer

Foreign body

Answer

Tertiary esophageal waves

Question 8

A 28-year-old pregnant female complains of hematemesis after an episode of vomiting. An upper GI endoscopy reveals a specific appearance. What is the most common site for this condition?

Accepted Answer

Just below the gastroesophageal junction

Answer

Cardia

Answer

Lower third of the esophagus

Answer

Lesser curvature of the stomach

Question 9

Which drug is used in the treatment of steroid-resistant ulcerative colitis?

Accepted Answer

Cyclosporine

Answer

Azathioprine

Answer

5-aminosalicylic acid (5ASA)

Answer

Racecadotril

Question 10

Anti-T.T.G. antibodies are seen in which condition?

Accepted Answer

Gluten enteropathy

Answer

Giardia malabsorption

Answer

Lactose deficiency

Answer

Bile acid malabsorption

Gastroenterology — MCQs

Gastroenterology — MCQs

On this page

Practice by Chapter

Want unlimited practice?