Abstract
A case of malignant fibrous histiocytoma of the temporal bone is presented. A 72-year-old female had suffered from right peripheral facial palsy for five years and her hearing had progressively worsened from a few years previously. On January 10, 1980, when she visited the our-patient clinic of the Shishu University Hospital, her right external auditory canal was occupied with a hard tumor. Surgical operation revealed that the tumor had no capsule and was attached to the dura mater and sigmoid sinus.
Histopathologically, the tumor showed characteristic findings of fibrous histiocytoma such as a streaming proliferation of long spindle-shaped fibrous histiocytes, an occasionally incomplete storiform pattern and associated xanthoma cell accumulation.
Fibrous histiocytoma is clinically malignant because of the difficulty of removal and the tendency for recurrence.
A review of the literature on malignant fibrous histiocytoma was made.
