Fibrous histiocytoma.
D005260:Female; D005534:Foot Diseases / Q000209:etiology / Q000473:pathology; D018409:Foot Injuries; D018219:Histiocytoma, Benign Fibrous / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D012878:Skin Neoplasms / Q000209:etiology / Q000473:pathology