[Malignant fibrous histiocytoma of the breast].

In connection with the mammary tumor of a 41-year-old woman the authors draw attention to the rare occurrence of malignant fibrous histiocytoma in the mamma. The histology of the mammary malignant fibrous histiocytoma, role of immunohistochemical reactions in the diagnosis are described. The literature dealing with the malignant fibrous histiocytoma in the mamma is reviewed. This is the 11th case reported in the literature. The authors discuss the possibilities of the therapy of the malignant fibrous histiocytoma in the mamma.