Carcinoma Arising in a Fibroadenoma

Breast carcinoma arising in solitary fibroadenoma is rare. In the case presented, the mammographic findings suggested a benign lesion, but secondary signs suggested carcinoma. The possibility of this disease association should be considered in patients over thirty-five years of age in whom breast cancer is likely to be seen. When the diagnosis is noninfiltrating carcinoma, the recommended treatment is simple mastectomy.