Liver and Biliary Pathology Practice Questions

Q: Which of the following is NOT an alteration in liver function tests seen in bacterial sepsis?

Jaundice is always associated with leukocytosis. **Explanation:** In the context of bacterial sepsis, the liver often undergoes functional changes known as **"Sepsis-associated Cholestasis."** **Why Option D is the correct answer (The False Statement):** While sepsis is a common cause of jaundice in critically ill patients, jaundice is **not always** associated with leukocytosis [1]. In severe sepsis or Gram-negative infections, patients may present with **leukopenia** (low WBC count) or a normal WBC count with a "left shift" (increased bands) [1]. Therefore, the presence of jaundice does not mandate a high white cell count. **Analysis of other options:** * **Option A:** Sepsis typically causes **conjugated hyperbilirubinemia** due to impaired canalicular excretion. Interestingly, this often occurs with **disproportionately normal or mildly elevated** transaminases (ALT/AST) and alkaline phosphatase, making it a classic "dissociated" biochemical picture. * **Option B & C:** The pathophysiology is driven by **endotoxemia** (LPS). Endotoxins trigger the release of cytokines (TNF-̑, IL-6), which downregulate hepatocyte canalicular transport systems (like **MRP2**). This impairs the transport of bile acids and organic anions, leading to cholestasis without primary mechanical obstruction. **NEET-PG High-Yield Pearls:** * **Mechanism:** Cytokine-mediated downregulation of transport proteins (MRP2/BSEP). * **Histology:** Often shows "canalicular cholestasis" (bile plugs) most prominent in Zone 3, with minimal hepatocyte necrosis. * **Clinical Hint:** If a septic patient develops sudden jaundice with stable liver enzymes, think of sepsis-induced cholestasis rather than viral hepatitis or biliary obstruction. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Inflammation and Repair, pp. 110-111.

Q: Which of the following features in a liver biopsy is characteristic of alpha-1 antitrypsin deficiency?

All of the above. Alpha-1 Antitrypsin (AAT) deficiency is an autosomal codominant disorder characterized by the misfolding of the AAT protein [1]. This prevents the protein from being secreted by hepatocytes, leading to its accumulation within the liver [1]. 1. **PAS-positive, diastase-resistant globules:** This is the **pathognomonic** histological feature [2]. The misfolded AAT protein accumulates in the endoplasmic reticulum of hepatocytes, appearing as eosinophilic round globules. These globules are PAS-positive; unlike glycogen, they are not digested by diastase, making them "diastase resistant." 2. **Cirrhosis:** The chronic accumulation of these misfolded proteins causes hepatocyte stress and apoptosis, eventually leading to chronic hepatitis, fibrosis, and ultimately **micronodular or mixed cirrhosis** [1]. 3. **Mallory Hyaline (Mallory-Denk bodies):** While most classically associated with alcoholic liver disease, Mallory hyaline (clumped intermediate filaments) can also be seen in AAT deficiency, Wilson disease, and non-alcoholic steatohepatitis (NASH). **Why "All of the above" is correct:** All three features are recognized histological findings in a patient with liver involvement due to AAT deficiency. **High-Yield Clinical Pearls for NEET-PG:** * **Genetics:** Most common mutation is **Glu342Lys** (PiZ allele). * **Stain of choice:** PAS with diastase pretreatment. * **Organ Involvement:** Causes **Panacinar emphysema** in lungs (due to lack of protease inhibition) and **Cirrhosis** in the liver (due to toxic gain of function/accumulation) [1]. * **Neonatal Jaundice:** AAT deficiency is a common genetic cause of neonatal cholestasis. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Liver and Gallbladder, pp. 856-858. [2] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Liver And Biliary System Disease, pp. 388-389.

Question 1

Which of the following liver tumors is likely to develop in females taking oral contraceptives?

Accepted Answer

Hepatic adenoma

Answer

Hepatoma

Answer

Lymphoma

Answer

Focal nodular hyperplasia

Question 2

What is the most common cause of Budd-Chiari syndrome?

Accepted Answer

Thrombosis of hepatic veins

Answer

Idiopathic

Answer

Valves in hepatic veins

Answer

Hepatocellular carcinoma

Question 3

Which of the following is NOT an alteration in liver function tests seen in bacterial sepsis?

Accepted Answer

Jaundice is always associated with leukocytosis

Answer

Elevation of bilirubin with normal liver enzymes

Answer

Liver function test alteration is due to endotoxemia

Answer

Endotoxemia impairs the transport of anions, resulting in impaired bile flow

Question 4

Which of the following features in a liver biopsy is characteristic of alpha-1 antitrypsin deficiency?

Accepted Answer

All of the above

Answer

PAS positive and diastase resistant globules are seen

Answer

Cirrhosis of the liver

Answer

Mallory hyaline

Question 5

A patient with right heart failure secondary to tricuspid regurgitation is found to have increased liver enzymes. USG shows enlargement of the liver. If the patient is developing 'nutmeg liver', what is the most likely etiology?

Accepted Answer

Chronic venous congestion

Answer

Infarction of liver

Answer

Amyloidosis

Answer

Budd-Chiari syndrome

Question 6

Unconjugated hyperbilirubinemia with increased urobilinogen is seen in which of the following conditions?

Accepted Answer

Hemolytic anemia

Answer

Liver cirrhosis

Answer

Bile duct obstruction

Answer

Sclerosing cholangitis

Question 7

In patients with cirrhosis of the liver, where is the site of obstruction in the portal system?

Accepted Answer

Sinusoids

Answer

Hepatic vein

Answer

Post sinusoidal

Answer

Extra hepatic portal vein

Question 8

A 48-year-old woman presents with a 3-week history of fatigue, yellow skin, and yellow sclerae. Physical examination reveals mild jaundice. Her serum bilirubin level is 3.7 mg/dL, predominantly unconjugated. Liver function tests, including serum AST, ALT, and alkaline phosphatase, are normal. Hemoglobin level is 6.0 g/dL. Jaundice resolves after corticosteroid administration. What is the most likely cause of hyperbilirubinemia in this patient?

Accepted Answer

Autoimmune hemolytic anemia

Answer

Acute hepatitis B infection

Answer

Gallstone in the common bile duct

Answer

Primary biliary cirrhosis

Question 9

Prussian blue stain detects which of the following?

Accepted Answer

Ferric iron

Answer

Ferrous iron

Answer

Glycogen

Answer

Lipids

Question 10

Which of the following viruses does not cause chronic hepatitis?

Accepted Answer

Hepatitis E Virus (HEV)

Answer

Hepatitis B Virus (HBV)

Answer

Hepatitis C Virus (HCV)

Answer

Hepatitis D Virus (HDV)

Liver and Biliary Pathology — MCQs

Liver and Biliary Pathology — MCQs

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