[Diagnosis and therapy of primary malignant fibrous histiocytoma of the kidney].

Malignant Fibrous Histiocytoma (MFH) is an unfrequent mesenchymal tumor first described by O'Brian in 1964 [1, 16]. The most common site of this malignancy is the limbs area and the retroperitoneum. Primary involvement of the kidney is extremely rare. Only thirteen cases are well documented in the literature. We report an additional case of such primary renal tumor.