[Cutaneous sarcoidosis after treatment with interferon for hepatitis C: A not entirely rare but often overlooked reaction].

Sarcoidosis (aka Boeck's sarcoid) is a granulomatous autoimmune disease of unknown etiology, which may affect the lungs and many other organs. A case of multifocal cutaneous sarcoidosis after treatment with pegylated interferon-alpha and ribavirin for chronic hepatitis C is demonstrated. Several related cases of this not entirely rare complication of immunotherapy have been reported in the literature.