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SIR—We describe a case of mumps complicated by hepatitis and acute acalculous cholecystitis. There are few published reports of hepatitis complicating mumps infection, and no previous reports of cholecystitis complicating mumps infection.

A 23-year-old man presented with a 1-week history of fever, acute bilateral parotitis, and orchitis, followed by 24 h of abdominal pain and vomiting. Several members of his soccer team had recently had mumps. He had never received mumps vaccine. He was febrile, with a temperature of 38.8°C, with a palpable, tender liver edge, and positive Murphy's sign. Initial blood test results showed a WBC count of 13,100 cells/mm3, a neutrophil count of 9500 cells/mm3, and a lymphocyte count of 1400 cells/mm3. He had a C-reactive protein level of 248 mg/L, a bilirubin level of 1.05 mg/dL, an alanine aminotransferase level of 160 IU/L, an alkaline phosphatase level of 480 IU/L, a γ-glutamyl transferase level of 494 IU/L, and an albumin level of 45 g/L. His blood urea nitrogen, creatinine, electrolyte, and serum amylase levels were all within normal limits, and blood cultures showed no bacterial growth at 5 days.

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