Abstract
The case of a patient with a fibroadenoma who then developed primary pure squamous cell carcinoma (SCC) of the breast is reported. This 52-year-old woman was being followed at our department for a previous fibroadenoma. She noticed that the mass was enlarging and was re-evaluated. Ultrasound of the mass showed a partial cystic component in the mass, and needle biopsy confirmed a diagnosis of SCC.
Breast-conserving surgery and sentinel lymph node biopsy were performed. The histopathologic diagnosis was a pure SCC without an adenocarcinoma component. Fibroadenoma-like lesions were seen surrounding the tumor, and it was thought to be a cancer within the fibroadenoma. SCC arising within a fibroademona is rare. This case is reported along with a discussion of the relevant literature.
