Gastroenterology Practice Questions

Q: Intrahepatic perisinusoidal portal hypertension is classically caused by?

Schistosomiasis. **Explanation:** Portal hypertension is classified based on the anatomical site of resistance to blood flow relative to the hepatic sinusoids: **Pre-hepatic, Intra-hepatic (Presinusoidal, Sinusoidal, Postsinusoidal), and Post-hepatic.** **Why Schistosomiasis is correct:** Schistosomiasis (specifically *S. mansoni* and *S. japonicum*) is the classic cause of **Intrahepatic Presinusoidal** portal hypertension [1]. The parasite eggs lodge in the small terminal venules of the portal vein within the liver, triggering a granulomatous reaction and "pipestem" fibrosis. Because the obstruction occurs before the blood reaches the sinusoids, the wedged hepatic venous pressure (WHVP) remains normal despite elevated portal pressure [1]. **Analysis of Incorrect Options:** * **Alcoholic Hepatitis:** This is the prototype for **Intrahepatic Sinusoidal** portal hypertension. Alcohol-induced damage and subsequent cirrhosis lead to architectural distortion and collagen deposition within the Space of Disse (sinusoids). * **Budd-Chiari Syndrome:** This is a **Post-hepatic** (or Intrahepatic Postsinusoidal) cause. It results from the obstruction of hepatic venous outflow (at the level of large hepatic veins or the IVC) [3], leading to severe congestion and hepatomegaly. **High-Yield NEET-PG Pearls:** 1. **Non-Cirrhotic Portal Fibrosis (NCPF):** Another common cause of intrahepatic presinusoidal hypertension in India. 2. **WHVP vs. FHVP:** In presinusoidal causes (like Schistosomiasis), the Wedged Hepatic Venous Pressure (WHVP) is normal. In sinusoidal causes (like Cirrhosis), the WHVP is elevated [4]. 3. **Extrahepatic Pre-hepatic:** Portal vein thrombosis is the most common cause in this category [2]. 4. **Clinical Sign:** Schistosomiasis typically presents with significant splenomegaly and variceal bleeding but preserved liver function (normal albumin/INR) until late stages [1].

Q: The Rockall score is used in the prognosis of which of the following conditions?

Upper gastrointestinal bleed. The **Rockall Score** is a clinical scoring system used to predict the risk of rebleeding and mortality in patients with **acute upper gastrointestinal bleeding (UGIB)**. It is a high-yield topic for NEET-PG as it helps clinicians decide which patients require urgent intervention versus those who can be managed as outpatients. ### **Explanation of Options** * **A. Upper Gastrointestinal Bleed (Correct):** The Rockall score incorporates both clinical criteria (age, shock/hemodynamics, comorbidities) and endoscopic findings (diagnosis, stigmata of recent hemorrhage). A score 8 indicates a high risk of mortality. * **B. Lower Gastrointestinal Bleed:** While risk scores exist for LGIB (e.g., Oakland score), the Rockall score is specific to UGIB, particularly peptic ulcer disease and variceal bleeds. * **C. Hepatic Encephalopathy:** This is assessed using the **West Haven Criteria** (clinical grading) or the **Child-Pugh/MELD scores** (for overall liver prognosis). * **D. Inflammatory Bowel Disease:** Disease activity in IBD is measured using scores like the **Mayo Score** (Ulcerative Colitis) or the **Crohn’s Disease Activity Index (CDAI)**. ### **Clinical Pearls for NEET-PG** 1. **Pre-endoscopic vs. Full Rockall:** The "Clinical Rockall Score" uses only age and vitals before endoscopy; the "Full Rockall Score" is calculated after the procedure. 2. **Glasgow-Blatchford Score (GBS):** This is another vital score for UGIB. Unlike the Rockall score, the GBS is used **initially** (pre-endoscopy) to identify "low-risk" patients who do not need hospital admission. 3. **Forrest Classification:** Used during endoscopy to grade the risk of rebleeding in peptic ulcers (e.g., Class Ia is a spurting hemorrhage).

Q: In patients with cirrhosis of the liver, where is the obstruction in the portal system typically located?

Sinusoids. **Explanation:** In **Cirrhosis**, the fundamental pathology involves diffuse fibrosis and the formation of regenerative nodules. This process leads to the deposition of collagen in the **Space of Disse**, causing "capillarization" of the sinusoids. This structural remodeling increases resistance to blood flow within the **Sinusoids**, making it the primary site of intrahepatic obstruction in cirrhotic portal hypertension [1]. **Analysis of Options:** * **D. Sinusoids (Correct):** Cirrhosis is the classic example of **Intrahepatic Sinusoidal** portal hypertension. The architectural distortion and myofibroblast contraction directly narrow the sinusoidal lumen [1]. * **A. Hepatic Vein:** Obstruction here is characteristic of **Budd-Chiari Syndrome**. This is classified as post-hepatic (or post-sinusoidal) venous outflow obstruction. * **B. Post-sinusoidal:** While some components of cirrhosis can affect the terminal hepatic venules, "post-sinusoidal" typically refers to conditions like **Sinusoidal Obstruction Syndrome (Veno-occlusive disease)**. In the context of cirrhosis, "Sinusoidal" is the more accurate and specific anatomical site. * **C. Extra-hepatic portal vein:** This refers to **Portal Vein Thrombosis (PVT)**, which is a "Pre-hepatic" cause of portal hypertension. **High-Yield Clinical Pearls for NEET-PG:** 1. **Pre-hepatic:** Portal vein thrombosis, Splenic vein thrombosis. 2. **Intra-hepatic (Pre-sinusoidal):** Schistosomiasis (most common worldwide), Non-cirrhotic portal fibrosis (NCPF). 3. **Intra-hepatic (Sinusoidal):** Cirrhosis (most common cause in India). 4. **Post-hepatic:** Budd-Chiari Syndrome, Constrictive pericarditis, IVC webs. 5. **HVPG (Hepatic Venous Pressure Gradient):** Normal is 1–5 mmHg. Portal hypertension is defined as >5 mmHg; Varices develop at >10 mmHg; Variceal bleed occurs at >12 mmHg [1].

Q: Low serum cobalamin and elevated serum folate levels are seen in?

Bacterial overgrowth syndrome. **Explanation:** The correct answer is **Bacterial Overgrowth Syndrome** (Small Intestinal Bacterial Overgrowth - SIBO). **Pathophysiology:** In SIBO, there is an excessive proliferation of colonic-type bacteria within the small intestine [1]. These bacteria compete with the host for nutrients, leading to a classic biochemical profile: 1. **Low Vitamin B12 (Cobalamin):** The bacteria (especially anaerobes) utilize and "consume" dietary B12 for their own metabolism, making it unavailable for absorption in the terminal ileum. 2. **Elevated Serum Folate:** Many enteric bacteria synthesize folate as a metabolic byproduct. This excess folate is absorbed in the proximal small intestine, leading to supranormal serum levels. **Analysis of Incorrect Options:** * **Celiac Sprue:** This is a malabsorption syndrome affecting the mucosa. It typically leads to **low** levels of both B12 and folate (along with iron) due to generalized villous atrophy and impaired absorption [2]. * **Acute/Chronic Myeloid Leukemia (AML/CML):** Myeloproliferative disorders are associated with **elevated** serum B12 levels. This occurs because of an increase in Transcobalamin I and III (haptocorrin), which are secreted by the expanded pool of granulocytes. **NEET-PG High-Yield Pearls:** * **Gold Standard Diagnosis for SIBO:** Jejunal aspirate culture showing >10⁵ CFU/mL (though non-invasive **Carbohydrate Breath Tests** using Glucose or Lactulose are more commonly used in clinical practice) [primary reference: 1]. * **Treatment of choice:** Rifaximin (a non-absorbable antibiotic). * **Blind Loop Syndrome:** A classic anatomical cause of SIBO (e.g., post-Billroth II surgery) where stasis allows bacterial proliferation [1]. * **Mnemonic:** In SIBO, bacteria **"Eat the B12, but Make the Folate."**

Q: A 35-year-old male presented with a history of persistent elevation of ALT for more than 6 months. He remains asymptomatic during this period. Other liver function tests, including ALP, bilirubin, and albumin, were normal. Diagnostic evaluation in this scenario includes all the given tests, EXCEPT:

Antimitochondrial antibody (AMA). This question tests your ability to differentiate between various causes of chronic asymptomatic transaminitis (elevated ALT/AST for >6 months). [2] ### **Explanation of the Correct Answer** **Antimitochondrial antibody (AMA)** is the hallmark marker for **Primary Biliary Cholangitis (PBC)**. PBC is a cholestatic liver disease characterized by the destruction of small intrahepatic bile ducts. The biochemical profile of PBC typically shows a significant elevation in **Alkaline Phosphatase (ALP)** and GGT, rather than an isolated elevation of ALT. [4] Since the patient has a normal ALP, PBC is highly unlikely, making AMA an unnecessary initial test. ### **Evaluation of Other Options** * **Anti-HCV antibody (Option C):** Chronic Hepatitis C is a leading cause of asymptomatic elevation of ALT. Screening for Hepatitis B (HBsAg) and Hepatitis C is a mandatory first-line step in evaluating chronic transaminitis. [2] * **Iron saturation percentage (Option A):** Hereditary Hemochromatosis often presents with asymptomatic transaminitis in its early stages. [2] Screening involves checking transferrin saturation and ferritin levels. * **Antinuclear antibody (ANA) (Option B):** Autoimmune Hepatitis (AIH) can present with persistent ALT elevation even in asymptomatic patients. [1] ANA and Anti-Smooth Muscle Antibody (ASMA) are the primary screening tools for AIH. [3] ### **Clinical Pearls for NEET-PG** * **Isolated ALT/AST elevation:** Think of NAFLD (most common), Chronic Viral Hepatitis, Alcohol, Hemochromatosis, or Autoimmune Hepatitis. [2] * **Isolated ALP elevation:** Think of Cholestatic diseases (PBC, PSC) or infiltrative diseases (Sarcoidosis, malignancy). [4] * **AST:ALT Ratio:** A ratio **>2:1** is highly suggestive of Alcoholic Liver Disease; a ratio **<1** is typically seen in NAFLD. * **First-line investigations** for asymptomatic transaminitis: HBsAg, Anti-HCV, Lipid profile (for NAFLD), and Iron studies. [2]

Q: Which of the following is the earliest symptom of Hepatic encephalopathy?

Change in sleep patterns. **Explanation:** Hepatic Encephalopathy (HE) is a reversible syndrome of neuromuscular and neuropsychiatric dysfunction caused by liver failure or portosystemic shunting [1]. **Why "Change in sleep patterns" is correct:** The earliest clinical manifestation of HE is often subtle and involves a **reversal of the sleep-wake cycle** (daytime somnolence and nighttime insomnia) [2]. This occurs in **Stage 1** (Prodromal stage) of the West Haven Criteria. Patients may also exhibit mild confusion, irritability, and a shortened attention span before more overt neurological signs appear. **Analysis of Incorrect Options:** * **Asterixis (Option B):** Also known as "flapping tremors," this is the hallmark sign of HE but typically appears in **Stage 2** (Lethargy/Confusion). It is not the earliest symptom. * **EEG Changes (Option C):** Classic EEG findings (generalized slowing and high-amplitude **triphasic waves**) are characteristic of HE but usually manifest as the patient progresses into Stage 2 or 3. It is a diagnostic finding, not a presenting symptom. * **Disorientation (Option D):** While disorientation to time and place is a key feature, it typically characterizes **Stage 2** (moderate) or **Stage 3** (severe) encephalopathy. **High-Yield Clinical Pearls for NEET-PG:** * **West Haven Criteria:** The standard grading system for HE (Stage 0 to 4). * **Constructional Apraxia:** An early sign where the patient cannot perform simple tasks like drawing a five-pointed star or a clock face. * **Fetor Hepaticus:** A musty, sweet breath odor caused by dimethyl sulfide; seen in advanced HE. * **Precipitating Factors:** Always look for triggers in clinical stems, such as GI bleed, infections (SBP), constipation, or hypokalemia. * **Treatment:** Lactulose (first-line) and Rifaximin are the mainstays of management.

Q: All of the following simulate chronic hepatitis except?

HAV. **Explanation:** The core concept tested here is the distinction between viruses that cause chronic infection and those that are strictly acute. **Chronic hepatitis** is defined as inflammation of the liver lasting for more than 6 months. **Why HAV is the correct answer:** Hepatitis A Virus (HAV) is an RNA virus transmitted via the feco-oral route. It causes **acute hepatitis only** and never progresses to a chronic state or a carrier state [1]. While it can rarely cause "relapsing hepatitis" or "cholestatic hepatitis," it does not lead to chronic liver disease or cirrhosis. Therefore, it cannot simulate chronic hepatitis. **Analysis of incorrect options:** * **HBV (Hepatitis B):** This is a classic cause of chronic hepatitis. Approximately 5-10% of adults and up to 90% of neonates infected with HBV develop chronic infection, which can progress to cirrhosis and hepatocellular carcinoma (HCC). * **Haemochromatosis:** This is an autosomal recessive disorder of iron overload. The progressive deposition of iron in hepatocytes leads to chronic inflammation, fibrosis, and eventually "bronze cirrhosis," simulating the clinical picture of chronic viral hepatitis. * **Wilson’s Disease:** A disorder of copper metabolism that can present as chronic active hepatitis, especially in children and young adults. It often mimics other forms of chronic liver disease before progressing to cirrhosis. **NEET-PG High-Yield Pearls:** * **Hepatitis E (HEV):** Generally causes acute hepatitis, but can cause **chronic hepatitis in immunocompromised patients** (e.g., organ transplant recipients). * **Hepatitis C (HCV):** Has the highest rate of chronicity (approx. 75-85% of cases) [2]. * **Rule of Thumb:** Only "B, C, and D" (Hepatitis B, C, and D) cause chronic viral hepatitis in immunocompetent hosts. "A and E" are typically acute.

Question 1

Intrahepatic perisinusoidal portal hypertension is classically caused by?

Accepted Answer

Schistosomiasis

Answer

Alcoholic hepatitis

Answer

Budd-Chiari syndrome

Answer

All of the above

Question 2

The Rockall score is used in the prognosis of which of the following conditions?

Accepted Answer

Upper gastrointestinal bleed

Answer

Lower gastrointestinal bleed

Answer

Hepatic encephalopathy

Answer

Inflammatory bowel disease

Question 3

A 70-year-old man presented with itching, jaundice and a palpable mass per abdomen and clay-colored stools. Urine tests performed on his sample yielded positive results. What is the type of jaundice he is suffering from?

Accepted Answer

Obstructive jaundice

Answer

Hemolytic jaundice

Answer

Prehepatic jaundice

Answer

Hepatic jaundice

Question 4

Which drug is effective in ulcerative colitis?

Accepted Answer

5-aminosalicylic acid (5-ASA)

Answer

Steroids

Answer

Sulfasalazine

Answer

Antibiotics

Question 5

In patients with cirrhosis of the liver, where is the obstruction in the portal system typically located?

Accepted Answer

Sinusoids

Answer

Hepatic vein

Answer

Post-sinusoidal

Answer

Extra-hepatic portal vein

Question 6

Low serum cobalamin and elevated serum folate levels are seen in?

Accepted Answer

Bacterial overgrowth syndrome

Answer

Acute myeloid leukemia

Answer

Celiac sprue

Answer

Chronic myeloid leukemia

Question 7

A 35-year-old male presented with a history of persistent elevation of ALT for more than 6 months. He remains asymptomatic during this period. Other liver function tests, including ALP, bilirubin, and albumin, were normal. Diagnostic evaluation in this scenario includes all the given tests, EXCEPT:

Accepted Answer

Antimitochondrial antibody (AMA)

Answer

Iron saturation percentage

Answer

Antinuclear antibody (ANA)

Answer

Anti-HCV antibody

Question 8

Which of the following is the earliest symptom of Hepatic encephalopathy?

Accepted Answer

Change in sleep patterns

Answer

Asterixis

Answer

Electroencephalogram (EEG) changes

Answer

Disorientation

Question 9

All of the following simulate chronic hepatitis except?

Accepted Answer

HAV

Answer

HBV

Answer

Haemochromatosis

Answer

Wilson's disease

Question 10

All of the following statements about Non-Alcoholic Fatty Liver Disease are true, except:

Accepted Answer

Clofibrate provides effective treatment

Answer

Common in diabetics

Answer

Commonest cause of cryptogenic cirrhosis

Answer

Associated with elevated transaminases

Gastroenterology — MCQs

Gastroenterology — MCQs

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