A leiomyosarcoma is a rare cancerous tumor of the smooth muscle cells. It is most often found in the uterus or abdomen.
Demetri GD. Sarcomas of soft tissue and bone, and other neoplasms of connective tissue. In: Goldman L, Schafer AI, eds. . 24th ed. Philadelphia, PA: Elsevier Saunders; 2011:chap 209.
National Comprehensive Cancer Network. NCCN Clinical Practice Guidelines in Oncology: Soft Tissue Sarcoma. Version 3.2012. Available at http://www.nccn.org/professionals/physician_gls/pdf/sarcoma.pdf. Accessed 03/07/2013.
Superficial anterior muscles