title: Malignant fibrous histiocytoma: report of two cases and review of the literature.
mesh_terms: D000368:Aged; D000842:Ankle / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D018219:Histiocytoma, Benign Fibrous / Q000473:pathology / Q000556:secondary / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local; D012186:Retroperitoneal Neoplasms / Q000473:pathology / Q000601:surgery