Breast lobular carcinoma in a fibroadenoma.

Lobular carcinoma arising in a fibroadenoma is a rare occurrence. A case is reported and literature is reviewed. Carcinomas developing in fibroadenomas are not intrinsically different from those not related to fibroadenomas. Prognosis and treatment are the same as for carcinomas of the same type arising outside and independently of fibroadenomas.