[A case of malignant fibrous histiocytoma of the buttocks]

A 67-year-old woman was admitted because of a tumor of the buttocks wall. The tumor was 13 x 10 x 8 cm in size, elastic hard, fixed to the gluteus maximum muscle. She was suspected of having a malignant tumor in the soft tissue, and the tumor was resected as completely as possible. After the first operation, she was diagnosed with recurrence of tumor in the local area a year later. After the second resection, she was found with recurrence of the tumor in the same area five years later. After the third operation, she has been doing well without any recurrences for five years. The prognoses of MFH are usually not so good, but this case could turn out to be a case of long metastasis free survival after local recurrences.