Epithelioid leiomyosarcoma of the skin.

We report a case of epithelioid leiomyosarcoma that developed on the nose of a 55-year-old Korean male over a one year period. The lesion was a pea sized, firm, erythematous, painless nodule with erosion in the center. Histologic examination revealed short spindled cells with blunt-ended nuclei and pleomorphic round to oval epithelioid cells with abundant eosinophilic cytoplasm that were perivascular and densely packed in the dermis. Immunostaining for desmin was negative, although stains for vimentin and smooth muscle actin were both strongly positive.