title: Leiomyosarcoma of the anus: report of a case.
abstract: We have presented an unusual case of leiomyosarcoma of the anus. On reviewing the literature, we did not find a similar case. This tumor metastasizes mainly to distant organs through the bloodstream. We treated the tumor by wide excision, followed by chemo-immunotherapy, hoping to sterilize possible microemboli. Since this type of lesion is very aggressive, we strongly suggest that any mass in the perianal region be excised and biopsied.
mesh_terms: D000328:Adult; D001005:Anus Neoplasms / Q000473:pathology / Q000628:therapy; D006801:Humans; D007890:Leiomyosarcoma / Q000473:pathology / Q000628:therapy; D008297:Male