Malignant fibrous histiocytoma(MFH) is the most common soft tissue sarcoma of late adultlife, majority of cases occuring in persons between ages of 50 and 70.

It occurs most frequently on the lower extremity followed by upper extremity and retroperitoneum.

Primary involvement of the kidney is quite rare, with only 19 cases reported in the literature.

We report a case of 74-year-old woman with histologically proven MFH of the right kidney.