title: Mixofibrossarcoma--case report.
abstract: Myxofibrosarcoma, previously known as malignant fibrous histiocytoma, myxoid variant, is a rare tumor of mesenchymal origin, composed of spindle cells and myxoid stroma. It mainly affects elderly people, involving the lower extremities and frequently extending to the dermis and subcutaneous tissue. The tumor presents high rates of recurrence, and a deep biopsy is required to obtain the correct diagnosis. We report a case of high-grade mixofibrossarcoma characterized by a rapidly growing tumor and the presence of marked cellular pleomorphism and an abundant myxoid matrix.
authors: Fundação Alfredo da Matta, Manaus, AM, Brasil.
authors: Walquíria Lima
authors: WL
authors: Tupinambá
authors: Renata Almeida
authors: RA
authors: Schettini
authors: Januário de
authors: Jd
authors: Souza Júnior
authors: Antonio Pedro Mendes
authors: AP
authors: Schettini
authors: Carlos Alberto Chirano
authors: CA
authors: Rodrigues
authors: Flaviano da Silva
authors: Fda S
authors: Oliveira
mesh_terms: D000328:Adult; D006801:Humans; D007717:Knee / Q000473:pathology*; D008297:Male; D009236:Myxosarcoma / Q000473:pathology*; D012878:Skin Neoplasms / Q000473:pathology*