The only known curative treatment is surgical removal including wide local excision or complete mastectomy. Our patient underwent mastectomy and postoperative irradiation. Because the deepest margin of the specimen was only 0.5 cm, complete excision was possible without the need for removing any muscle. Ten months after the mastectomy, this patient had no evidence of local recurrence or metastases. In patients with leiomyosarcoma, there is no clear role for lymph node dissection or adjuvant chemotherapy, and the value of radiotherapy is also disputed.3There is 1 case report4in the literature describing a patient who received postoperative chemotherapy but still developed local recurrence and distant metastases 2 months after therapy. Current recommendations include postoperative irradiation if the microscopic margins are questionable. Prognostic factors may include the size of the tumor, histologic grade, and surgical margins. Late recurrence can occur; therefore, patients need long-term follow-up.