Liver and Biliary Pathology Practice Questions

Q: Mallory hyaline is seen in which of the following conditions?

All of the above. **Explanation:** **Mallory-Denk bodies (Mallory Hyaline)** are eosinophilic, rope-like intracytoplasmic inclusions found within hepatocytes. They represent an accumulation of damaged intermediate filaments, specifically **Cytokeratin 8 and 18**, which have been ubiquitinated and cross-linked. **Why "All of the above" is correct:** While classically associated with **Alcoholic Liver Disease** (where they are most prominent), Mallory hyaline is not pathognomonic for it [1]. It is a non-specific marker of hepatocyte injury and can be seen in several chronic liver conditions: * **Alcoholic Liver Disease (Option A):** The most common association, especially in alcoholic hepatitis [1]. * **Hepatocellular Carcinoma (Option B):** Can be found within the malignant hepatocytes. * **Wilson’s Disease (Option C):** Often seen during the chronic inflammatory phase. * **Other conditions:** Non-alcoholic steatohepatitis (NASH), Primary Biliary Cholangitis (PBC), Indian Childhood Cirrhosis, and Alpha-1 antitrypsin deficiency [2]. **High-Yield Clinical Pearls for NEET-PG:** * **Composition:** Primarily Cytokeratin 8 and 18 (Intermediate filaments). * **Staining:** They appear bright pink/eosinophilic on H&E stain. They can be highlighted using **Ubiquitin** or **p62** immunohistochemical stains. * **Key Distinction:** Do not confuse Mallory bodies with **Councilman bodies** (apoptotic hepatocytes seen in Yellow Fever and Viral Hepatitis) or **Negri bodies** (seen in Rabies). * **Mnemonic:** "Mallory is a **W**eird **A**nd **I**nsecure **N**eighbor" (**W**ilson’s, **A**lcoholic hepatitis, **I**ndian childhood cirrhosis, **N**ASH). **References:** [1] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Liver And Biliary System Disease, pp. 388-390. [2] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Liver and Gallbladder, pp. 852-854.

Q: Which of the following is not a typical feature of autoimmune hepatitis?

Ground glass hepatocytes. **Explanation:** The correct answer is **D. Ground glass hepatocytes**. This is a characteristic histological feature of **Chronic Hepatitis B infection**, caused by the massive accumulation of Hepatitis B surface antigen (HBsAg) within the smooth endoplasmic reticulum [1]. On H&E stain, these cells appear as finely granular, eosinophilic cytoplasm with a distinct clear halo. **Why the other options are incorrect (Features of Autoimmune Hepatitis):** Autoimmune Hepatitis (AIH) is characterized by a "plasma cell-rich" inflammatory infiltrate. Its hallmark histological features include: * **Interface Hepatitis (Option A):** This is the most characteristic feature, where dense inflammatory infiltrates (lymphocytes and plasma cells) spill over from the portal tracts into the adjacent periportal parenchyma, causing necrosis of limiting plate hepatocytes [1]. * **Emperipolesis (Option B):** This refers to the active penetration of one cell into another (typically a CD8+ T-cell or plasma cell entering a hepatocyte), where the engulfed cell remains viable [1]. * **Hepatic Rosette Formation (Option C):** In response to injury, regenerating hepatocytes arrange themselves in circular clusters or "pseudorosettes" [1]. **NEET-PG High-Yield Pearls:** * **Serology:** Type 1 AIH is associated with **ANA** and **Anti-Smooth Muscle Antibodies (ASMA)**. Type 2 AIH (more common in children) is associated with **Anti-LKM1** antibodies [1]. * **Hypergammaglobulinemia:** A key diagnostic clue is a disproportionate rise in serum IgG levels [1]. * **Staining:** Ground glass hepatocytes (HBV) can be specifically highlighted using **Orcein** or **Victoria Blue** stains. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Liver and Gallbladder, pp. 843-846.

Q: Alagille syndrome is characterized by which of the following findings?

Bile duct paucity. **Explanation:** **Alagille Syndrome** is an autosomal dominant multisystem disorder, most commonly caused by mutations in the **JAG1 gene** (Notch signaling pathway). The hallmark pathological feature is **Bile Duct Paucity**, defined as a reduced ratio of interlobular bile ducts to portal tracts (typically <0.4). * **Why Option A is Correct:** In Alagille syndrome, there is a failure in the development of the intrahepatic biliary tree. Histologically, this manifests as a significant scarcity of bile ducts within the portal triads, leading to chronic cholestasis and jaundice in neonates or young children. * **Why Options B, C, and D are Incorrect:** * **IHBR Dilation:** This is characteristic of obstructive conditions (like biliary atresia or stones) or Caroli disease, not a developmental lack of ducts. * **PBC:** This is an autoimmune destruction of small bile ducts typically seen in middle-aged women, characterized by "florid duct lesions" and anti-mitochondrial antibodies (AMA). * **PSC:** This involves "onion-skin" fibrosis of the bile ducts and is strongly associated with Ulcerative Colitis; it affects both intra- and extrahepatic ducts. **High-Yield Clinical Pearls for NEET-PG:** * **Genetic Mutation:** *JAG1* (90%) or *NOTCH2* genes. * **Clinical Pentad:** 1. **Liver:** Cholestasis due to bile duct paucity. 2. **Heart:** Peripheral pulmonary artery stenosis (most common). 3. **Eyes:** Posterior embryotoxon (anterior chamber defect). 4. **Skeletal:** "Butterfly vertebrae" (clefting of vertebral bodies). 5. **Facies:** Characteristic "triangular facies" (prominent forehead, deep-set eyes, pointed chin). * **Diagnosis:** Often suspected in an infant with neonatal jaundice and a heart murmur.

Question 1

Mallory hyaline is seen in which of the following conditions?

Accepted Answer

All of the above

Answer

Alcoholic liver disease

Answer

Hepatocellular carcinoma

Answer

Wilson's disease

Question 2

Which of the following is not a typical feature of autoimmune hepatitis?

Accepted Answer

Ground glass hepatocytes

Answer

Interface hepatitis

Answer

Emperipolesis

Answer

Hepatic rosette formation

Question 3

Which virus causes hepatocellular carcinoma?

Accepted Answer

Hepatitis B virus

Answer

Arbovirus

Answer

Herpes simplex virus

Answer

Hepatitis A virus

Question 4

Rokitansky-Aschoff sinuses are seen in which of the following conditions?

Accepted Answer

Chronic cholecystitis

Answer

Acute cholecystitis

Answer

Xanthogranulomatous cholecystitis

Answer

Gallbladder carcinoma

Question 5

In anoxia of the liver, in which region is necrosis typically seen?

Accepted Answer

Centrilobular

Answer

Around the periphery

Answer

Around the central vein

Answer

Around the bile duct

Question 6

Which of the following histological features is most characteristic of acute viral hepatitis?

Accepted Answer

Necrosis around central veins

Answer

Mononuclear cell infiltration

Answer

Scarring

Answer

Interface hepatitis

Question 7

Nodular regenerating hyperplasia is associated with which of the following?

Accepted Answer

Drug toxicity

Answer

Budd-Chiari syndrome

Answer

Alcohol abuse

Answer

Hepatitis B infection

Question 8

Alagille syndrome is characterized by which of the following findings?

Accepted Answer

Bile duct paucity

Answer

Intrahepatic bile duct (IHBR) dilation

Answer

Primary biliary cholangitis (PBC)

Answer

Primary sclerosing cholangitis (PSC)

Question 9

A 40-year-old male with a history of chronic alcoholism is diagnosed with cirrhosis and presents with a lump in the right lobe of the liver. His serum AFP level is normal. What is the most probable diagnosis?

Accepted Answer

Hepatocellular carcinoma

Answer

Fibrohyperplasia

Answer

Metastases

Answer

Hepatocellular adenoma

Question 10

Increased lipolysis of fat stores, which can result from starvation, diabetes mellitus, or corticosteroid use, is most likely to cause steatosis (fatty liver) through which one of the listed mechanisms?

Accepted Answer

Increased free fatty acid delivery to the liver leads to triglyceride accumulation in hepatocytes

Answer

Decreased free fatty acid excretion from the liver leads to free fatty acid accumulation in hepatocytes

Answer

Excess NADH (high NADH/NAD ratio) causes excess production of lactate from pyruvate, which accumulates in hepatocytes

Answer

Inhibition of apoprotein synthesis by the liver leads to phospholipid accumulation in hepatocytes

Liver and Biliary Pathology — MCQs

Liver and Biliary Pathology — MCQs

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