A 52-year-old man with a 20-year history of daily alcohol consumption presents to the emergency department with hematemesis and melena. On examination, he is jaundiced, has spider angiomas on the chest, and a palpable spleen. His blood pressure is 95/60 mmHg with tachycardia. Laboratory investigations reveal: hemoglobin 8.2 g/dL, INR 2.8, serum bilirubin 4.2 mg/dL, AST 320 U/L, ALT 95 U/L, and albumin 2.1 g/dL. Upper endoscopy confirms bleeding esophageal varices. What is the most likely underlying hepatic pathology?

Explanation

## Clinical Diagnosis: Cirrhosis with Portal Hypertension **Key Point:** The constellation of clinical and biochemical findings—variceal bleeding, jaundice, spider angiomas, splenomegaly, coagulopathy (INR 2.8), hypoalbuminemia, and thrombocytopenia—is pathognomonic for decompensated cirrhosis. ### Pathological Basis Chronic alcohol use leads to a progressive sequence: 1. **Hepatic steatosis** (reversible) → fatty infiltration of hepatocytes 2. **Alcoholic hepatitis** (acute inflammation, necrosis) → can resolve or progress 3. **Fibrosis** (collagen deposition in periportal and perisinusoidal zones) → architectural distortion 4. **Cirrhosis** (irreversible bridging fibrosis, nodule formation, loss of normal architecture) → portal hypertension and end-stage liver disease **High-Yield:** Variceal bleeding is a hallmark of **decompensated cirrhosis**. It occurs when portal pressure exceeds 12 mmHg, causing portosystemic collateral formation (esophageal varices, gastric varices, hemorrhoids). ### Why This Patient Has Cirrhosis | Finding | Mechanism | |---------|----------| | Variceal bleeding | Portal hypertension from cirrhotic architecture | | Jaundice | Hepatic synthetic failure + cholestasis | | Spider angiomas | Hyperestrogenism from impaired hepatic metabolism | | Splenomegaly | Splenic congestion from portal hypertension | | Coagulopathy (INR ↑) | Reduced synthesis of clotting factors (II, V, VII, IX, X) | | Hypoalbuminemia | Impaired hepatic synthesis | | AST > ALT | Mitochondrial damage; AST also released from RBCs in hemolysis | **Clinical Pearl:** The AST:ALT ratio > 2 is a classic marker of alcoholic liver disease and cirrhosis, reflecting mitochondrial injury. [cite:Robbins 10e Ch 18] ### Diagnostic Confirmation While liver biopsy is the gold standard for cirrhosis diagnosis, it is contraindicated in this acutely bleeding patient. Clinical and biochemical evidence suffices: - **FibroScan (transient elastography)** would show markedly elevated liver stiffness (>12.5 kPa). - **Imaging (ultrasound/CT)** would show nodular liver surface, ascites, and collateral vessels. **Mnemonic: CHILD-Pugh Score** — **C**hildren's **H**ospital **I**ncidence **L**iver **D**isease score grades cirrhosis severity using bilirubin, albumin, INR, ascites, encephalopathy. This patient's low albumin and elevated INR place him in Class B or C (moderate to severe).