Rare tumors of difficult initial diagnosis

Resumen

Abstract

Five rare tumors of diffi cult initial diagnosis are reported. In each case, several diff erential diagnoses were suggested and many supplementary exams were necessary. These 5 patients were studied at our hospital in a six-month period, with fi nal diagnoses of skin and soft tissue angiosarcoma, peripheral primitive neuroectodermal tumor, plasmablastic lymphoma, amelanotic and desmoplastic polipoid melanoma, and nodular vulvar melanoma

(Dermatol Argent 2009;15(4):272-277).

Key words: angiosarcoma, primitive neuroectodermal tumor, plasmablastic lymphoma, desmoplastic melanoma, vulvar melanoma.