[Oil keratoses and scrotal cancer, an avoidable occupational disease of the metal turner].

Report of a 39 year old lathe worker which suffered from oil acne 10 years ago. The disease was registrated as occupational dermatosis. It healed up after the patient changed to a plant with better conditions of work. Pitch warts on the scrotum remained and were failed to notice. Multiple scrotal carcinomas developed many years later. The case report illustrates the necessity of regularly control examinations of every patient which was suffering from oil acne, and the importance of occupational hygienic conditions for the development of oil acne and lathe turner cancer.