Liver and Biliary Pathology Practice Questions

Q: Microvesicular fatty change in hepatocytes is seen due to infection with which of the following viruses?

Hepatitis D virus. **Explanation:** The correct answer is **Hepatitis D virus (HDV)**. **Why HDV is correct:** Microvesicular steatosis (fatty change) is a characteristic histological feature of **Hepatitis D virus** infection, particularly in severe or fulminant cases [1]. In HDV infection, the accumulation of small fat droplets within the cytoplasm of hepatocytes occurs without displacing the nucleus. This is often attributed to the direct cytopathic effect of the Delta antigen on mitochondrial function, leading to impaired beta-oxidation of fatty acids. **Analysis of Incorrect Options:** * **Hepatitis A (HAV):** Typically presents with lobular inflammation, hepatocyte swelling (ballooning degeneration), and acidophilic (Councilman) bodies. It does not typically cause steatosis. * **Hepatitis B (HBV):** The hallmark histological finding is **"Ground-glass hepatocytes,"** caused by the accumulation of HBsAg in the endoplasmic reticulum. While it causes inflammation, it is not associated with microvesicular fat. * **Hepatitis C (HCV):** HCV is famously associated with **Macrovesicular steatosis** (large fat droplets displacing the nucleus), lymphoid aggregates in portal tracts, and bile duct injury. It does not typically cause microvesicular change. **High-Yield NEET-PG Pearls:** 1. **Microvesicular Steatosis Differential:** Remember the mnemonic **"RASH"**: **R**eye’s syndrome, **A**cute fatty liver of pregnancy, **S**alicylates/Sodium Valproate toxicity, and **H**epatitis D (also HEV in pregnant women) [1]. 2. **HDV Requirement:** HDV is a defective RNA virus that requires the HBsAg coat from HBV for its transmission and replication [1]. 3. **HCV vs. HDV Fat:** If the question mentions "Steatosis" generally, think HCV (Genotype 3). If it specifies "Microvesicular," think HDV. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Liver and Gallbladder, pp. 836-837, 842.

Q: Which of the following is NOT a tumor marker for primary hepatocellular carcinoma?

Neurotensin. ### Explanation **Hepatocellular Carcinoma (HCC)** is a primary malignancy of the liver, often associated with chronic hepatitis and cirrhosis. Diagnosis relies on imaging (LI-RADS) and specific biochemical markers. **Why Neurotensin is the correct answer:** **Neurotensin** is a neuropeptide primarily found in the central nervous system and gastrointestinal tract. While it can be elevated in certain neuroendocrine tumors (like VIPomas or pancreatic endocrine tumors) and is specifically associated with **Fibrolamellar Hepatocellular Carcinoma** (a rare variant of HCC), it is **not** considered a standard tumor marker for primary (classic) HCC. **Analysis of incorrect options:** * **Alpha-fetoprotein (AFP):** The most widely used screening and diagnostic marker for HCC. Levels >400 ng/mL in a high-risk patient are highly suggestive of HCC. * **PIVKA-2 (Protein Induced by Vitamin K Absence/Antagonist-II):** Also known as Des-gamma-carboxyprothrombin (DCP). It is an abnormal prothrombin molecule produced by malignant hepatocytes and is highly specific for HCC, often used alongside AFP to increase sensitivity. * **Alpha-2 Macroglobulin:** This is a serum protein that has been identified as a potential biomarker for HCC, often showing altered levels in patients with liver cirrhosis and subsequent malignant transformation. **High-Yield Clinical Pearls for NEET-PG:** * **Fibrolamellar HCC:** Occurs in young adults (non-cirrhotic livers), lacks AFP elevation, and characteristically shows **elevated serum Neurotensin** and Vitamin B12 binding capacity. * **AFP-L3:** A subfraction of AFP that is more specific for HCC than total AFP. * **Glypican-3:** A cell-surface proteoglycan that is a highly sensitive immunohistochemical (IHC) marker for HCC.

Q: A 25-year-old male presents with jaundice, clay-colored stools, and pruritus. Laboratory investigations reveal a total bilirubin of 7 mg/dL, direct bilirubin of 5 mg/dL, and an ALP of 500 IU/L. A biopsy of the biliary tract shows specific findings. What is your diagnosis?

Primary Sclerosing Cholangitis (PSC). ***Primary Sclerosing Cholangitis (PSC)*** - Young male with **cholestatic pattern** (high ALP, direct bilirubin predominance) and the classic **"onion-skin" periductal concentric fibrosis** on biopsy is pathognomonic for PSC. - PSC predominantly affects **young males** and is strongly associated with **inflammatory bowel disease** (especially ulcerative colitis). *Secondary Bile Duct Carcinoma (SBC)* - Would typically present in **older patients** with more severe constitutional symptoms like **weight loss** and **abdominal pain**. - Biopsy would show **malignant epithelial cells** and **invasive carcinoma**, not the benign concentric fibrosis seen in PSC. *Primary Biliary Cholangitis (PBC)* - Predominantly affects **middle-aged women** (female:male ratio 9:1), making it unlikely in a young male. - Characteristic biopsy finding is **florid duct lesion** with **granulomatous destruction** of bile ducts, not concentric fibrosis. *Bile duct stones* - Would typically cause **fluctuating symptoms** with episodes of **biliary colic** and possible **Charcot's triad**. - Imaging would reveal **ductal dilatation** and **stone shadows**, while biopsy would show **acute inflammation** without the specific fibrotic pattern.

Question 1

A 45-year-old woman presents with a 2-month history of fatigue and recurrent fever. She also complains of tenderness below the right costal margin and dark urine. Physical examination reveals jaundice and mild hepatomegaly. The serum is positive for hepatitis B virus antigen. Which of the following best describes the mechanism of indirect virus-mediated hepatocyte cell death in this patient?

Accepted Answer

Immune recognition of viral antigens on the cell surface

Answer

Accumulation of abnormal cytoplasmic proteins

Answer

Generation of cytoplasmic free radicals

Answer

Impaired plasma membrane Na+/K+ ATPase activity

Question 2

Periportal fatty infiltration of the liver is seen with which of the following conditions?

Accepted Answer

Malnutrition

Answer

Alcoholism

Answer

Viral hepatitis

Answer

Tetracycline

Question 3

Microvesicular fatty liver is seen in which of the following conditions?

Accepted Answer

All of the above

Answer

Valproic acid use

Answer

Tetracycline use

Answer

Reye's syndrome

Question 4

Microvesicular fatty change in hepatocytes is seen due to infection with which of the following viruses?

Accepted Answer

Hepatitis D virus

Answer

Hepatitis A virus

Answer

Hepatitis B virus

Answer

Hepatitis C virus

Question 5

Which of the following is NOT a tumor marker for primary hepatocellular carcinoma?

Accepted Answer

Neurotensin

Answer

Alpha fetoprotein

Answer

Alpha 2 macroglobulin

Answer

PIVKA-2

Question 6

What is the triad of hemochromatosis?

Accepted Answer

Micronodular cirrhosis, diabetes mellitus, and skin pigmentation

Answer

Macronodular cirrhosis, diabetes mellitus, and skin pigmentation

Answer

Macronodular cirrhosis, diabetes insipidus, and skin pigmentation

Answer

None of the above

Question 7

Which of the following statements is false regarding Focal nodular hyperplasia?

Accepted Answer

Can progress to hepatocellular carcinoma

Answer

AFP levels are normal

Answer

Associated with use of anabolic steroids and oral contraceptives

Answer

A central stellate scar is characteristic

Question 8

A 50-year-old man presents for a routine physical examination, which demonstrates an enlarged liver. During the visit, he describes memos from his supervisor at work regarding chronic exposure to vinyl chloride. The patient has an elevated risk for which of the following tumors?

Accepted Answer

Angiosarcoma of the liver

Answer

Carcinoid tumor

Answer

Hepatic adenoma

Answer

Lymphoma

Question 9

Which of the following statements is NOT true regarding α-fetoprotein?

Accepted Answer

High levels are seen in fibrolamellar hepatic carcinoma

Answer

Pre-operative high levels indicate worse prognosis

Answer

High levels are seen in stomach carcinoma

Answer

Levels may be increased in Hepatitis

Question 10

A 25-year-old male presents with jaundice, clay-colored stools, and pruritus. Laboratory investigations reveal a total bilirubin of 7 mg/dL, direct bilirubin of 5 mg/dL, and an ALP of 500 IU/L. A biopsy of the biliary tract shows specific findings. What is your diagnosis?

Accepted Answer

Primary Sclerosing Cholangitis (PSC)

Answer

Secondary Bile Duct Carcinoma (SBC)

Answer

Primary Biliary Cholangitis (PBC)

Answer

Bile duct stones

Liver and Biliary Pathology — MCQs

Liver and Biliary Pathology — MCQs

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