Liver and Biliary Pathology Practice Questions

Q: What is the main cause of congenital hyperbilirubinemia?

Gilbert's Syndrome. **Explanation:** **Gilbert’s Syndrome** is the correct answer because it is the **most common** cause of hereditary hyperbilirubinemia, affecting approximately 3–7% of the general population. It is an autosomal recessive condition characterized by a mild reduction (about 30% of normal) in the activity of the enzyme **UDP-glucuronosyltransferase (UGT1A1)** [1]. This leads to intermittent, mild unconjugated hyperbilirubinemia, often triggered by stress, fasting, or illness. **Analysis of Incorrect Options:** * **Crigler-Najjar Syndrome:** This is much rarer than Gilbert’s. Type I involves a total absence of UGT1A1 (fatal without transplant), while Type II involves a severe deficiency (<10% activity) [1]. * **Dubin-Johnson Syndrome:** A rare autosomal recessive disorder involving a defect in the **MRP2 transport protein**, leading to conjugated hyperbilirubinemia and a characteristic **black liver** due to pigment deposition [1]. * **Rotor’s Syndrome:** Similar to Dubin-Johnson but even rarer; it involves a defect in OATP1B1/B3 transporters. It presents with conjugated hyperbilirubinemia but **lacks** the black liver pigmentation [1]. **NEET-PG High-Yield Pearls:** * **Gilbert’s Syndrome:** Look for a young patient with mild jaundice during exams or infection, with normal LFTs except for isolated unconjugated bilirubin (<3 mg/dL). No treatment is required. * **Enzyme Deficiency:** Gilbert’s and Crigler-Najjar involve **UGT1A1** (Unconjugated); Dubin-Johnson and Rotor involve **excretion defects** (Conjugated) [1]. * **Diagnostic Test:** The "Fasting Test" (bilirubin increases upon caloric restriction) is classic for Gilbert’s. * **Biopsy:** Dubin-Johnson shows coarse brown-black granules in hepatocytes (epinephrine metabolites); Rotor’s biopsy is histologically normal [1]. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Liver and Gallbladder, p. 860.

Q: Snover's triad in acute cellular rejection of liver transplantation includes all of the following except?

Periportal fibrosis. **Explanation:** Acute Cellular Rejection (ACR) of the liver typically occurs between day 5 and day 30 post-transplant. The diagnosis is confirmed histologically using the **Banff Criteria**, which is based on the classic **Snover’s Triad**. **Why Periportal Fibrosis is the Correct Answer:** Periportal fibrosis is a feature of **chronic rejection** or long-standing biliary complications, not acute cellular rejection. ACR is characterized by acute inflammatory changes rather than structural scarring or architectural distortion. **Analysis of Snover’s Triad (Incorrect Options):** The triad consists of the following three histological features: 1. **Portal Inflammation (Option A):** A mixed inflammatory infiltrate (predominantly lymphocytes, but also eosinophils and neutrophils) involving the portal tracts. 2. **Endothelialitis (Option B):** Also known as subendothelial venulitis. It involves inflammatory cells (lymphocytes) attaching to and undermining the endothelium of portal or central veins. This is the most specific sign of ACR. 3. **Bile Duct Inflammation/Damage (Option C):** Often referred to as **nonsuppurative cholangitis**, where inflammatory cells infiltrate the biliary epithelium, leading to nuclear pleomorphism and cytoplasmic vacuolization. **Clinical Pearls for NEET-PG:** * **Grading:** ACR is graded using the **Rejection Activity Index (RAI)** or **Banff Score**, which assigns 0–3 points to each component of the triad (Max score = 9). * **First Sign:** A sudden rise in liver enzymes (ALT/AST) and bilirubin is the clinical hallmark. * **Treatment:** The first-line treatment for ACR is **high-dose intravenous corticosteroids** (methylprednisolone "pulses"). * **Chronic Rejection:** Characterized by "Vanishing Bile Duct Syndrome" (ductopenia) and obliterative arteriopathy.

Question 1

Normal liver histology is seen in which of the following conditions?

Accepted Answer

Crigler-Najjar syndrome

Answer

Gilbert's syndrome

Answer

Rotor syndrome

Answer

Dubin-Johnson syndrome

Question 2

All of the following are prehepatic causes of cirrhosis except?

Accepted Answer

Severe congestive heart failure

Answer

Portal vein thrombosis

Answer

Splenic vein thrombosis

Answer

Massive splenomegaly

Question 3

Rokitansky-Aschoff sinuses are a feature of which of the following conditions?

Accepted Answer

Adenomyomatosis of the gallbladder

Answer

Chronic cholecystitis

Answer

Acute cholecystitis

Answer

Carcinoma of the gallbladder

Question 4

A 36-year-old male presents with recent darkening of his skin, which has a dark, bronze color. Workup reveals signs of diabetes mellitus. His serum iron is 1150 mg/dL, and his transferrin saturation is 98%. A liver biopsy reveals extensive deposits of hemosiderin in hepatocytes and Kupffer cells. What is the most likely mechanism responsible for this constellation of findings?

Accepted Answer

Excessive reabsorption of iron from the small intestines

Answer

Defective excretion of copper into the bile

Answer

Defective synthesis of a1 antitrypsin

Answer

Excessive absorption of galactose from the small intestines

Question 5

All of the following are risk factors for Hepatocellular carcinoma except?

Accepted Answer

Animal fat in diet

Answer

Hepatitis C infection

Answer

Alcoholism

Answer

Aflatoxins

Question 6

Which of the following statements regarding Fibrolamellar Carcinoma of the liver is FALSE?

Accepted Answer

It is associated with a worse prognosis compared to conventional Hepatocellular carcinoma.

Answer

It is a variant of Hepatocellular carcinoma.

Answer

AFP levels are typically normal.

Answer

It commonly occurs in young adults.

Question 7

What is the main cause of congenital hyperbilirubinemia?

Accepted Answer

Gilbert's Syndrome

Answer

Crigler-Najjar Syndrome

Answer

Rotor's Syndrome

Answer

Dubin-Johnson Syndrome

Question 8

What are the most likely histological findings on a liver biopsy from a 20-year-old male who died due to acetaminophen overdose?

Accepted Answer

Centrizonal necrosis

Answer

Focal scattered necrosis

Answer

Midzonal necrosis

Answer

Steatohepatitis

Question 9

Microvascular steatosis is seen in all of the following conditions except?

Accepted Answer

Alcoholic liver disease

Answer

Acute fatty liver of pregnancy

Answer

Methotrexate toxicity

Answer

Reye syndrome

Question 10

Snover's triad in acute cellular rejection of liver transplantation includes all of the following except?

Accepted Answer

Periportal fibrosis

Answer

Portal inflammation

Answer

Endothelialitis

Answer

Cholangitis

Liver and Biliary Pathology — MCQs

Liver and Biliary Pathology — MCQs

On this page

Practice by Chapter

Want unlimited practice?