[A case of polymyositis presenting histological picture of bronchiolitis obliterans organizing pneumonia with transbronchial lung biopsy specimens].

A 69-year-old woman was admitted to our hospital because of slight fever, general fatigue, joint pain and proximal muscle weakness. Severe elevation of serum enzyme levels of CPK, transaminase and aldolase was noted. The chest roentgengram showed diffuse reticular and nodular infiltrates. Histological examination of the transbronchial lung biopsy specimens revealed alveolitis and organizing pneumonia. Daily administration of 80 mg predonisolone was effective for both lung findings and myositis.