[A periappendiceal abscess during combination interferon and ribavirin treatment for chronic hepatitis C].

A 57-year old woman received interferon alfa-2b and ribavirin combination treatment for chronic hepatitis C. High fever and lower abdominal pain developed 10 months after the start of treatment. Antibiotic drugs were not effective. After two weeks, colonoscopic findings revealed a periappendiceal abscess. After colonoscopy study, fever decreased. We have to suspect abscess formation too as appearing a high fever during interferon and ribavirin combination treatment.