Dermal leiomyosarcoma.

Leiomyosarcoma of the skin is a rare tumor that cannot be diagnosed clinically because its gross appearance is nonspecific. The primary skin tumor usually appears as a solitary nodule. It may arise de novo in the dermis or in the subcutaneous tissue, or as a metastatic lesion from an internal neoplasm. Dermal leiomyosarcomas rarely metastasize, unlike the subcutaneous tumors. We describe a case of the dermal type of leiomyosarcoma.