[Fibromatosis breast in the male. Case study].

Background: mammary fibromatosis is a rare pathology. It constitutes 0.2% of breast cancers, and case in men are exceptional. The definitive diagnosis is histological.
Clinical Case: we report the case of a male of 52 years, diagnosed with breast fibromatosis after pathologic study of tumor in the right breast. Programmed surgery for excision with wide margins was done. We performed a mastectomy of the subcutaneous fibromatosis with a pathologic study with clear margins. The postoperative course was uncomplicated and did not require adjuvant therapy. At 6 months follow-up he remains free of disease. The treatment of choice is surgical excision with wide margins. Adjuvant treatment is controversial.
Conclusions: the fibromatosis in the breast is very rare and an exceptional occurrence in men. Surgery is the definitive treatment; few results exist for adjuvant therapy.