ABSTRACT
Cutaneous leiomyosarcoma is a rare soft tissue tumor that accounts for 2~3% of all soft tissue sarcomas. Cutaneous leiomyosarcoma can be subdivided into dermal, subcutaneous, and secondary leiomyosarcomas. This subdivision is important because of the different prognosis according to the types. The dermal type of cutaneous leiomyosarcomas are small and grow in the dermis. They rarely metasize, and the prognosis for survival after excision is favorable. We describe a case of dermal type cutaneous leiomyosarcoma on the extensor surface of the right thigh in a 35-year-old man.
Subject(s)
Adult , Humans , Dermis , Leiomyosarcoma , Prognosis , Sarcoma , ThighABSTRACT
Cutaneous leiomyosarcoma is a rare soft-tissue tumor of smooth muscle derivation that accounts for 2%-3% of all soft tissue sarcomas. Cutaneous leiomyosarcomas can be subdivided into dermal and subcutaneous leiomyosarcomas. Because of the different prognosis, it is important to distinguish between dermal and subcutaneous forms. Immunohistochemical stains, such as vimentin, smooth muscle actin (SMA), desmin, CD68, CD34, and S-100, may aid in the recognition of smooth muscle derivation and in the differentiation from other malignant spindle cell tumors. We report a case of cutaneous leiomyosarcoma on the extensor surface of the left thigh in a 61-year-old man.