Historically, the treatment of hepatitis C virus infection has been difficult, but therapeutic options have improved markedly recently because of the development of novel antiviral therapies. These therapies have been well tolerated. We describe a patient who was receiving such therapy and had development of temporally related and histologically confirmed severe pulmonary toxicity. Pulmonary toxicity should be considered a potential serious complication of novel antiviral therapy for hepatitis C virus infection.
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