A 52-year-old man from Delhi presents with a 3-month history of progressive abdominal distension, jaundice, and pruritus. He has a 20-year history of daily alcohol consumption (60–80 g/day). On examination, he has spider angiomas on the chest, hepatomegaly, splenomegaly, and ascites. Laboratory investigations show: total bilirubin 4.2 mg/dL, AST 280 U/L, ALT 95 U/L, albumin 2.8 g/dL, INR 2.1, and platelet count 85,000/μL. Abdominal ultrasound reveals cirrhosis with portal hypertension. A liver biopsy shows bridging fibrosis with Mallory–Denk bodies and neutrophilic infiltration. Which histological finding is most characteristic of the acute alcoholic hepatitis component in this patient?

Explanation

## Histopathology of Alcoholic Liver Disease Alcoholic hepatitis represents acute inflammation superimposed on chronic liver injury. The patient's clinical presentation (jaundice, coagulopathy, hypoalbuminemia, portal hypertension) combined with the biopsy findings confirms cirrhosis with active hepatitis. ### Characteristic Histological Features of Alcoholic Hepatitis **Key Point:** The triad of alcoholic hepatitis comprises: 1. **Mallory–Denk bodies** (MDBs) — aggregates of hyperphosphorylated ubiquitin and α-tubulin in hepatocytes; pathognomonic for alcoholic injury (though not exclusive) 2. **Neutrophilic infiltration** — predominantly polymorphonuclear leukocytes surrounding damaged hepatocytes 3. **Hepatocyte necrosis** — ballooning degeneration and apoptosis ### Differential Histological Patterns in Alcoholic Liver Disease | Finding | Stage | Significance | |---------|-------|---------------| | Steatosis (macro + micro) | Early alcoholic fatty liver | Reversible; no inflammation | | Mallory–Denk bodies + neutrophils + necrosis | Acute alcoholic hepatitis | Indicates active inflammation; poor prognosis | | Bridging fibrosis | Intermediate | Progression toward cirrhosis | | Cirrhosis with regenerative nodules | End-stage | Irreversible; risk of HCC | **Clinical Pearl:** The presence of Mallory–Denk bodies is NOT pathognomonic for alcohol — they are also seen in Wilson disease, non-alcoholic fatty liver disease (NAFLD), and primary biliary cholangitis (PBC). However, in the context of heavy alcohol use and acute hepatitis, they are highly suggestive of alcoholic hepatitis. **High-Yield:** Neutrophilic infiltration around hepatocytes (especially around ballooning hepatocytes) is the hallmark of acute alcoholic hepatitis and distinguishes it from simple steatosis or chronic fibrosis alone. ### Why This Matters Clinically The presence of acute hepatitis (Mallory–Denk bodies + neutrophils) in a cirrhotic patient indicates ongoing active injury and carries a worse prognosis. The **Maddrey discriminant function** (DF = 4.6 × [PT prolongation in seconds] + serum bilirubin in mg/dL) is used to stratify severity; this patient's INR 2.1 and bilirubin 4.2 suggest severe disease (DF likely >32), warranting consideration of corticosteroids or pentoxifylline.