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Necroinflammatory patterns. A. Normal liver biopsy with portal area (triangle) and central vein (oval). B. Chronic hepatitis pattern with portal predominant inflammation. C. Zone 3 necrosis without significant portal or parenchymal inflammation. D. Acute hepatitis with diffuse inflammation but no confluent necrosis. E. Acute hepatitis with zone 3 necrosis. F. Acute hepatitis with bridging necrosis involving portal areas and central veins.
