Which histopathological feature best distinguishes alcoholic hepatitis from simple alcoholic fatty liver in a 52-year-old man with chronic alcohol use disorder?

Question

Accepted Answer

D. Neutrophilic infiltration, hepatocyte necrosis, and Mallory-Denk bodies. ## Distinguishing Alcoholic Hepatitis from Fatty Liver

### Histopathological Comparison

| Feature | Alcoholic Fatty Liver | Alcoholic Hepatitis |
|---------|----------------------|---------------------|
| **Steatosis** | Predominant finding | Present but not sole feature |
| **Inflammation** | Minimal or absent | Acute neutrophilic infiltration |
| **Hepatocyte Necrosis** | Absent | Present (ballooning) |
| **Mallory-Denk Bodies** | Absent or rare | Characteristic finding |
| **Fibrosis** | None or minimal | Portal and perivenular |
| **Clinical Severity** | Reversible | Potentially fulminant |

### Key Pathological Features of Alcoholic Hepatitis

**Key Point:** Alcoholic hepatitis is characterized by the **triad of hepatocyte injury, acute inflammation, and Mallory-Denk bodies** — this combination distinguishes it from simple steatosis.

**High-Yield:** Mallory-Denk bodies (also called Mallory hyaline) are aggregates of ubiquitinated proteins and represent a hallmark of alcoholic hepatitis. They appear as eosinophilic intracytoplasmic inclusions on H&E staining.

**Clinical Pearl:** Alcoholic hepatitis is a clinical diagnosis supported by histology. Patients present with jaundice, hepatomegaly, elevated transaminases (AST > ALT), and elevated bilirubin. The presence of neutrophilic infiltration correlates with disease severity and prognosis.

### Why Neutrophilic Infiltration + Necrosis + Mallory-Denk Bodies?

These three findings together indicate **active hepatocellular injury and inflammation** — the defining pathology of alcoholic hepatitis. Simple steatosis lacks this inflammatory component and carries a better prognosis if alcohol is withdrawn.

**Mnemonic:** **MAD** = **M**allory bodies, **A**cute inflammation, **D**amage (necrosis) = Alcoholic hepatitis.

[cite:Robbins 10e Ch 18]

![Alcoholic Liver Disease diagram](https://mmcphlazjonnzmdysowq.supabase.co/storage/v1/object/public/blog-images/explanation/3059.webp)

Answer

A. Cirrhotic changes with bridging fibrosis

Answer

B. Portal fibrosis with minimal parenchymal involvement

Answer

C. Hepatic steatosis alone without inflammation

Which histopathological feature best distinguishes alcoholic hepatitis from simple alcoholic fatty liver in a 52-year-old man with chronic alcohol use disorder?

Explanation

Distinguishing Alcoholic Hepatitis from Fatty Liver

Histopathological Comparison

Key Pathological Features of Alcoholic Hepatitis

Why Neutrophilic Infiltration + Necrosis + Mallory-Denk Bodies?

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Feature	Alcoholic Fatty Liver	Alcoholic Hepatitis
Steatosis	Predominant finding	Present but not sole feature
Inflammation	Minimal or absent	Acute neutrophilic infiltration
Hepatocyte Necrosis	Absent	Present (ballooning)
Mallory-Denk Bodies	Absent or rare	Characteristic finding
Fibrosis	None or minimal	Portal and perivenular
Clinical Severity	Reversible	Potentially fulminant