Bilateral syringomatous adenomas of the nipple: Case report with immunohistochemical characterization of a rare tumor mimicking malignancy.

Objectives: Syringomatous adenoma of the nipple (SAN) is a rare benign infiltrative neoplasm that may be confused with low-grade breast carcinomas. We report the case of 71-year-old woman with a fungating left breast mass and subareolar calcifications in the contralateral breast.

Methods: Histomorphologic features were evaluated with standard H&E-stained sections.