Histiocitoma fibroso maligno

introduction: the sarcomas are soft tissue malignant tumors accounting for the 0.7 % of malignant tumors in general with a rate of 3 by 100 000. the malignant fibrous histiocytoma is a high grade tumor included in the group of soft tissue tumors. objective: to expose the cytohistologic features, treatment and course of this tumor in study case and treated in "roberto rodríguez fernández" teaching provincial hospital of ciego de avila municipality. description: this is the case of a male patient aged 60 presenting with an increasing large soft tissue mass in the left thigh. the mass was operated on with block exeresis, analytical previous studies, femoral arteriography and echography. conclusions: the anatomic and pathologic diagnosis was a malignant fibrous histiocytoma pleomorphous type; the patient was referred to oncology service where was treated with radiotherapy. at 6 months he was free of disease. a review of literature was performed analyzing its clinical presentation also, its histological findings, the imaging diagnostic test and the therapeutical procedure.