A 42-yr-old man with ulcerative colitis was admitted for investigation of prolonged fever associated with cholestatic liver tests. Endoscopic retrograde cholangiopancreatography demonstrated a normal biliary tree, and liver biopsy showed granulomata. A clinical diagnosis of drug-induced granulomatous hepatitis was established as the symptoms disappeared after cessation of mesalamine therapy and recurred on rechallenge. Although the differential diagnosis of fever and hepatitis in patients with inflammatory bowel disease is wide, in this case mesalamine is the most likely cause.

A 42-yr-old man with ulcerative colitis was admitted for investigation of prolonged fever associated with cholestatic liver tests. Endoscopic retrograde cholangiopancreatography demonstrated a normal biliary tree, and liver biopsy showed granulomata. A clinical diagnosis of drug-induced granulomatous hepatitis was established as the symptoms disappeared after cessation of mesalamine therapy and recurred on rechallenge. Although the differential diagnosis of fever and hepatitis in patients with inflammatory bowel disease is wide, in this case mesalamine is the most likely cause.

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