Liver and Biliary Pathology Practice Questions

Q: Mallory hyaline bodies are seen in all of the following conditions except?

Crigler-Najjar syndrome. **Explanation:** Mallory hyaline bodies (Mallory-Denk bodies) are eosinophilic intracytoplasmic inclusions found in hepatocytes. They are composed of tangled intermediate filaments (primarily **cytokeratin 8 and 18**) ubiquitinated and complexed with other proteins like p62. **Why Crigler-Najjar syndrome is the correct answer:** Crigler-Najjar syndrome is a genetic disorder characterized by a deficiency of the enzyme **UDP-glucuronosyltransferase**, leading to impaired conjugation of bilirubin. It is a functional metabolic defect of bilirubin processing and does not involve the cytoskeletal damage or chronic inflammation required to form Mallory hyaline bodies. **Analysis of other options:** * **Alcoholic Hepatitis:** This is the classic condition associated with Mallory bodies. Acetaldehyde (a metabolite of alcohol) causes lipid peroxidation and cytoskeletal damage. * **Indian Childhood Cirrhosis (ICC):** This condition is characterized by excessive copper deposition and severe hepatic inflammation, where Mallory bodies are a prominent histological feature. * **Wilson’s Disease:** Similar to ICC, the toxic accumulation of copper leads to oxidative stress and intermediate filament damage, frequently resulting in the formation of Mallory bodies. **High-Yield Clinical Pearls for NEET-PG:** * **Mnemonic for Mallory Bodies:** "**W**e **A**ll **I**nherit **P**oor **N**avy **B**lue" (**W**ilson’s, **A**lcoholic hepatitis, **I**ndian childhood cirrhosis, **P**rimary biliary cholangitis, **N**onalcoholic steatohematitis, **B**iliary cirrhosis). * **Staining:** They appear "ropey" or "coral-like" on H&E stain and are positive for **Ubiquitin**. * **Key Concept:** Mallory bodies are markers of **hepatocyte injury and oxidative stress**, not specific to any single disease, but notably absent in purely metabolic unconjugated hyperbilirubinemias like Crigler-Najjar or Gilbert syndrome.

Q: Which of the following is a marker for the fibrolamellar variant of hepatocellular carcinoma?

Neurotensin. **Explanation:** **Fibrolamellar Hepatocellular Carcinoma (FL-HCC)** is a distinct variant of hepatocellular carcinoma typically seen in young adults (20–40 years) without underlying cirrhosis or HBV/HCV infection. **Why Neurotensin is correct:** Unlike conventional HCC, FL-HCC cells frequently express **Neurotensin**, a neuropeptide. Elevated serum levels of neurotensin or its precursor (pro-neurotensin) and increased expression of Vitamin B12-binding protein (transcobalamin) are characteristic biochemical markers for this variant. **Analysis of Incorrect Options:** * **AFP (Alpha-Fetoprotein):** This is the most significant differentiator. While AFP is elevated in 60–80% of conventional HCC cases [1], it is characteristically **normal** in FL-HCC. * **Glypican-3 & Hep-Par-1:** These are highly sensitive and specific immunohistochemical markers for **hepatocytic differentiation**. They are positive in both conventional HCC and the fibrolamellar variant; therefore, they are not specific markers for FL-HCC itself. **High-Yield Clinical Pearls for NEET-PG:** * **Demographics:** Young adults; no gender predilection (unlike conventional HCC which is male-dominant). * **Morphology:** Large polygonal cells with abundant eosinophilic cytoplasm (oncocytic) and prominent nucleoli, separated by **parallel lamellae of collagen bundles**. * **Genetic Marker:** A highly specific recurrent fusion gene, **DNAJB1-PRKACA**, is found in nearly all cases of FL-HCC. * **Prognosis:** Generally better than conventional HCC because it usually arises in a non-cirrhotic liver [1], making it more amenable to surgical resection. **References:** [1] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Liver And Biliary System Disease, pp. 399-400.

Q: In hepatic cirrhosis, which of the following serum proteins is characteristically increased?

Gamma globulin. **Explanation:** In hepatic cirrhosis, the characteristic change in the serum protein electrophoresis (SPEP) pattern is a significant increase in **Gamma globulins**, often accompanied by a phenomenon known as **"Beta-Gamma bridging."** **Why Gamma globulin is increased:** The increase is primarily due to a polyclonal gammopathy. In a cirrhotic liver, the damaged parenchyma and shunting of portal blood allow intestinal antigens to bypass hepatic filtration. These antigens reach the systemic circulation and stimulate the reticuloendothelial system and B-lymphocytes, leading to increased production of antibodies (IgA, IgG, and IgM). The IgA specifically migrates between the beta and gamma zones, creating the classic "bridging" appearance on electrophoresis. **Analysis of Incorrect Options:** * **Albumin:** This is the most abundant protein synthesized by the liver. In cirrhosis, due to impaired synthetic function, serum albumin levels **decrease** (hypoalbuminemia), contributing to edema and ascites [1]. * **Alpha 1 & Alpha 2 globulins:** These fractions contain acute-phase reactants (like Alpha-1 antitrypsin and Haptoglobin) synthesized by hepatocytes. In chronic liver disease/cirrhosis, their synthesis is typically **decreased** or remains normal, but they do not characteristically increase. **NEET-PG High-Yield Pearls:** * **Beta-Gamma Bridging:** Pathognomonic SPEP finding for portal cirrhosis (caused by IgA elevation). * **A:G Ratio:** In cirrhosis, the Albumin-to-Globulin ratio is **reversed** (normally 2:1, it becomes <1). * **Prothrombin Time (PT):** The best indicator of acute synthetic function and prognosis in liver disease, as Factor VII has the shortest half-life. * **Serum Albumin:** A better indicator of **chronic** synthetic function (half-life ~20 days) [1]. **References:** [1] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Liver And Biliary System Disease, pp. 396-398.

Question 1

Which statement is not true regarding Primary Biliary Cholangitis (PBC)?

Accepted Answer

There is an increased risk of hepatocellular carcinoma.

Answer

It is often asymptomatic.

Answer

IgM levels are frequently elevated.

Answer

Antimitochondrial antibodies are typically positive.

Question 2

Mallory hyaline bodies are seen in all of the following conditions except?

Accepted Answer

Crigler-Najjar syndrome

Answer

Indian childhood cirrhosis

Answer

Wilson's disease

Answer

Alcoholic hepatitis

Question 3

In hemochromatosis, all of the following are affected except?

Accepted Answer

Central Nervous System

Answer

Bronze diabetes

Answer

Hyperpigmentation

Answer

Restrictive cardiomyopathy

Question 4

A 63-year-old man with a 30-year history of alcohol abuse presents with hematemesis for the past day. Examination reveals ascites, mild jaundice, an enlarged spleen, gynecomastia, spider telangiectasias, and testicular atrophy. Rectal examination shows prominent hemorrhoids and a normal-sized prostate. An emergent upper endoscopy reveals dilated, bleeding submucosal vessels in the esophagus. Laboratory studies show total protein, 5.9 g/dL; albumin, 3.2 g/dL; AST, 137 U/L; ALT, 108 U/L; total bilirubin, 5.4 mg/dL; prothrombin time, 20 seconds; ammonia, 76 µmol/L; and hematocrit, 21%. Which of the following pathologic findings in his liver is most likely to explain the hematemesis?

Accepted Answer

Cirrhosis

Answer

Cholangitis

Answer

Cholestasis

Answer

Hepatitis

Question 5

Which of the following is a marker for the fibrolamellar variant of hepatocellular carcinoma?

Accepted Answer

Neurotensin

Answer

AFP

Answer

Glypican-3

Answer

Hep-Par-1

Question 6

In hepatic cirrhosis, which of the following serum proteins is characteristically increased?

Accepted Answer

Gamma globulin

Answer

Alpha 1 globulin

Answer

Alpha 2 globulin

Answer

Albumin

Question 7

Bile ductopenia is seen in which of the following conditions?

Accepted Answer

Graft-versus-host disease (GVHD)

Answer

Alcoholic hepatitis

Answer

Autoimmune hepatitis

Answer

Cirrhosis

Question 8

Hemolytic anemia is associated with which of the following types of gallstones?

Accepted Answer

Pigmented

Answer

Mixed

Answer

Cholesterol

Answer

None of the above

Question 9

Fatty change in the liver is associated with the use of which medication?

Accepted Answer

Tetracycline

Answer

Erythromycin

Answer

Chlorpromazine

Answer

Acetaminophen

Question 10

Which of the following statements are true about hepatocellular carcinoma?

Accepted Answer

Associated with HBV and HCV

Answer

Cirrhosis is a predisposing factor

Answer

The fibrolamellar variety is not associated with cirrhosis

Answer

Has a low propensity for vascular invasion

Liver and Biliary Pathology — MCQs

Liver and Biliary Pathology — MCQs

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