Breast fibromatosis is a benign breast tumor of mesenchymal origin, accounting for 0.2% of breast tumors. This study reports two cases of breast fibromatosis highlighting its diagnostic, morphological, therapeutic and evolutionary features. In both cases, this tumor clinically and radiologically mimicked a cancer. Diagnostic confirmation was based on histological examination. Breast fibromatosis was characterized by local progression and a tendency to recurrence, hence the role of surgical excision with free surgical margins in our patients. The role of locoregional treatments (radiotherapy and cryotherapy) and medical treatments, in particular anti-estrogen therapy, is not clearly defined. In conclusion, breast fibromatosis must be known as it mimicks breast cancer and is characterized by a very high recurrence rate, without ever developing metastases.
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