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Abstract
Among about 250 automatic lathe operators employed in one Swedish engineering industry, 8 cases of scrotal cancer were discovered over a period of 24 years. These men represent an incidence of about 1400 per million per year. The exposure time to mineral oil was between 19 and 43 years. Treatment of solitary small and medium sized tumours was excision and direct suture. That for large or multiple tumours was total resection of the scrotal wall and reconstruction with split skin grafts. With clinically demonstrable lymph node metastases, bilateral inguinal gland dissection was done. Seven cases have been treated according to these principles and have shown no recurrence after an observation time of from 1 to 20 years. Prophylactic measures of a technical, hygienic, and medical character are discussed. In all probability those protective measures already in use, and those being planned by the industry in question, to reduce oil contamination of the skin to a minimum, will considerably diminish the risk of scrotal cancer among the involved workers.