[Chronic viral hepatitis C in patient with Hand-Schüller-Christian disease].

Chronic hepatitis C often occurs among patients with different diseases and may influence their natural history. From the other hand coexisting diseases may modify the hepatitis C infection. We present a case of a male patient with the histiocytosis X, earlier called Hand-Schüller-Christian disease with hepatitis C virus infection. The mild course of the chronic hepatitis C, not requiring anti-viral therapy, may be the result of immunomodulation relevant to Hand-Schüller-Christian disease.