Liver and Biliary Pathology — MCQs

Liver and Biliary Pathology Indian Medical PG Practice Questions and MCQs

Question 401: Mallory bodies are typically seen in all of the following conditions except:

A. Primary biliary cirrhosis
B. Hepatocellular carcinoma
C. Neonatal hepatitis (Correct Answer)
D. Alcoholic liver disease

Explanation: ***Neonatal hepatitis (does not present with Mallory bodies)*** - Mallory bodies are typically absent in neonatal hepatitis, which often presents with **hepatocellular necrosis** but not the characteristic cytoplasmic inclusions. - The condition predominantly affects newborns and is associated with **viral infections** rather than alcoholic injury leading to Mallory bodies. *Hepatocellular carcinoma* - Hepatocellular carcinoma may show **Mallory bodies**, particularly in cases that have underlying liver disease such as cirrhosis [2][3]. - They may also appear in the setting of **alcohol-related liver conditions** that can predate the carcinoma [1][4]. *Alcoholic liver disease* - Mallory bodies are a classic finding in alcoholic liver disease, forming due to **cytoskeletal damage** from alcohol metabolism [1][4][5]. - The presence of these bodies, along with **steatosis**, indicates severe liver injury related to alcohol consumption [1][4]. *Indian childhood cirrhosis* - This condition is associated with Mallory bodies and represents **cholestatic liver disease** linked to **nutritional deficiencies** and malabsorption in children. - Histologically, it shares features with alcoholic liver disease, including the presence of these abnormal inclusions [1][4]. **References:** [1] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Liver And Biliary System Disease, pp. 389-390. [2] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Liver and Gallbladder, p. 852. [3] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Liver and Gallbladder, pp. 852-854. [4] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Liver And Biliary System Disease, pp. 388-389. [5] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Liver and Gallbladder, pp. 848-850.

Question 402: Which of the following substances is NOT typically found in gallstones?

A. Cholesterol
B. Oxalates (Correct Answer)
C. Phosphate
D. Carbonate

Explanation: ***Oxalates*** - Gallstones are primarily composed of **cholesterol**, **bile pigments**, and **calcium salts**, but they do not contain oxalates [1][2][3]. - Oxalates are more commonly associated with **kidney stones**, making this correct. *Carbonate* - Gallstones can contain **calcium carbonate**, particularly in certain types of stones, indicating that this option is incorrect. - These stones are formed in the **gallbladder**, often due to altered bile composition [2]. *Phosphate* - Some gallstones can contain **calcium phosphate**, especially in cases of infection or liver disease, which makes this option unsuitable. - Phosphate can contribute to the formation of **mixed stones** in the gallbladder. *Cholesterol* - In fact, the most common type of gallstone is the **cholesterol stone**, indicating that this option is incorrect [1][3]. - Cholesterol stones form when there is excessive **cholesterol** in the bile, leading to crystallization [3]. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Liver and Gallbladder, pp. 882-883. [2] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Liver And Biliary System Disease, pp. 403-404. [3] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Liver and Gallbladder, p. 882.

Question 403: Which of the following liver tumors has a propensity to invade the portal or hepatic vein?

A. Cavernous hemangioma
B. Hepatocellular carcinoma (Correct Answer)
C. Focal nodular hyperplasia
D. Hepatic adenoma

Explanation: ***Hepatocellular carcinoma*** - **Hepatocellular carcinoma (HCC)** is known for its aggressive nature and a characteristic tendency to invade vascular structures, particularly the **portal vein** or hepatic veins [1]. - This **vascular invasion** contributes to its metastatic potential and is a critical factor in prognosis and treatment planning [1].*Cavernous hemangioma* - A **cavernous hemangioma** is a benign vascular tumor of the liver, typically recognized as an incidental finding. - While it is a vascular lesion, it does not invade the large hepatic or portal veins but rather consists of **dilated vascular spaces** within the liver parenchyma.*Focal nodular hyperplasia* - **Focal nodular hyperplasia (FNH)** is a **benign liver lesion** characterized by a central fibrous scar and radiating septa [2]. - It is typically well-circumscribed and does not exhibit aggressive features like **vascular invasion** [2].*Hepatic adenoma* - A **hepatic adenoma** is a benign tumor, often associated with oral contraceptive use, which can sometimes pose a risk of rupture or malignant transformation. - However, it does not typically show features of **vascular invasion** into the portal or hepatic veins [2]. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Liver and Gallbladder, pp. 878-879. [2] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Liver And Biliary System Disease, pp. 398-399.

Question 404: Which drug is associated with causing microvesicular fatty liver?

A. Valproate (Correct Answer)
B. Reye's Syndrome
C. Non-alcoholic fatty liver disease (NAFLD)
D. Acute Fatty Liver of Pregnancy (AFLP)

Explanation: ***Valproate*** - Valproate is a well-documented cause of **drug-induced microvesicular steatosis**, particularly in children - It interferes with **mitochondrial beta-oxidation** of fatty acids, leading to accumulation of small lipid droplets within hepatocytes - The microvesicular pattern is characterized by small fat droplets that do not displace the nucleus - Risk is higher in children under 2 years, those on polytherapy, and patients with metabolic disorders *Reye's Syndrome* - While Reye's Syndrome does cause microvesicular steatosis, it is a **syndrome** (not a drug), typically associated with viral illness and aspirin use in children - It presents with acute encephalopathy and liver dysfunction - Not a pharmacological agent itself *Non-alcoholic fatty liver disease (NAFLD)* - NAFLD causes **macrovesicular steatosis**, not microvesicular - Large lipid droplets displace the hepatocyte nucleus to the periphery - Associated with metabolic syndrome, obesity, and insulin resistance *Acute Fatty Liver of Pregnancy (AFLP)* - AFLP does cause microvesicular steatosis but is a **pregnancy-related condition**, not a drug - Occurs in the third trimester and is a medical emergency - Related to defects in mitochondrial fatty acid oxidation

Practice by Chapter

Jaundice and Cholestasis

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Viral Hepatitis

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Alcoholic and Non-alcoholic Fatty Liver Disease

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Drug and Toxin Induced Liver Injury

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Cirrhosis and Its Complications

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Metabolic Liver Diseases

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Liver Tumors

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Gallbladder and Biliary Tract Diseases

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Congenital Liver Diseases

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Liver Transplantation Pathology

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