## Peripheral Blood Smear in Chronic Liver Disease ### Expected Findings in Liver Disease **Key Point:** Chronic liver disease produces characteristic RBC morphology changes due to: - Altered lipid metabolism - Impaired synthetic function - Portal hypertension sequelae ### Common Findings | Finding | Mechanism | Frequency | |---------|-----------|----------| | **Target cells** | Increased cholesterol/phospholipid ratio; thin central staining area | Very common | | **Acanthocytes (spur cells)** | Abnormal lipid composition of RBC membrane; irregular projections | Common in advanced disease | | **Anisopoikilocytosis** | Variation in RBC size and shape from hemolysis and dyserythropoiesis | Common | | **Polychromasia** | Reticulocytosis from compensatory erythropoiesis | Common | | **Spherocytes** | Membrane loss from oxidative stress and hemolysis | Present | | **Schistocytes** | Microangiopathic hemolytic anemia from portal hypertension | Present | ### Why Rouleaux Formation is NOT Typical **High-Yield:** Rouleaux formation (stacking of RBCs like coins) occurs in conditions with **elevated acute phase reactants and immunoglobulins**: - Multiple myeloma (M-spike) - Waldenstrom macroglobulinemia - Severe infections - Inflammatory states **Clinical Pearl:** While chronic liver disease may have some elevation of immunoglobulins (especially IgA and IgG), it does NOT typically produce the **marked rouleaux formation** seen in paraproteinemias. Rouleaux is NOT a characteristic finding in uncomplicated chronic liver disease. **Warning:** Do not confuse rouleaux (immunoglobulin-mediated) with agglutination (cold agglutinin disease) or normal RBC stacking. ### Mnemonic for Liver Disease RBC Changes **TACS** — Target cells, Acanthocytes, Cholestasis effects, Spherocytes
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