A giant malignant fibrous histiocytoma on the scalp.

Malignant fibrosis histiocytoma (MFH) is one of the most common soft tissue sarcomas of adult life. The most common sites of origin are the proximal extremities, particularly the thigh and buttock. The tumors are multilobular fleshy masses, often apparently circumscribed on gross examination. We report a case of a MFH of the head in a 57-year-old woman. Our case is clinically unusual in that the tumor rapidly grew up to 15 cm in a very short time.