Myxoid malignant fibrous histiocytoma.
D005350:Fibroma / Q000473:pathology; D018219:Histiocytoma, Benign Fibrous / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012983:Soft Tissue Neoplasms / Q000473:pathology*