Representative histopathologic findings of cholestatic hepatitis due to amoxicillin–clavulanate. a Portal inflammation with cholestasis (arrowhead). b Portal inflammation with injured duct. c Lobular inflammation and apoptotic hepatocyte (arrow). d Canalicular cholestasis (arrowheads). ALP serum alkaline phosphatase, ALT serum alanine aminotransferase, AST serum aspartate aminotransferase, SD standard deviation, TB serum total bilirubin, ULN upper limit of normal