Leiomyosarcoma of the breast--a case report and an electron microscopic study.

We treated a fifty six-year-old woman with leiomyosarcoma of the breast. Light microscopy showed typical findings of leiomyosarcoma and electron microscopy confirmed the smooth muscle origin of the tumor. The patient is well without evidence of metastases or local recurrence of the tumor fifty-five months after radical mastectomy.