原发性肺平滑肌肉瘤罕见报导,且多无随访结果,以致预后不明。我所自1970～1983年收治三例随访至1987年10月,术后已3～9年无复发,现予报导。并对其预后进行探讨。例一、女、43岁。1970年5月25日入院。诉13个月来左胸疼痛伴气短,劳动时加刷。一月前外院 Primary pulmonary leiomyosarcoma is rarely reported, and there are few follow-up results, so the prognosis is unknown. Since 1970 to 1983, I have been followed up from three cases to October 1987. There have been no recurrences after 3 to 9 years, and we are reporting this. And its prognosis. Example 1, female, 43 years old. Admitted to hospital on May 25, 1970. v. 13 months left chest pain with shortness of breath, labor brush. January outside the hospital