RESUMEN
Syringomatous tumor of the nipple (SyT), previously known as syringomatous adenoma of the nipple (SAN) was originally described in 1983 as a rare benign tumor of the sweat duct. It is a rare benign tumor arising from the skin adnexal eccrine glands that can be misdiagnosed as invasive carcinoma due to its infiltrative nature, resulting in overtreatment. We report clinical, histopathologic, and surgical findings of a case of infiltrating syringomatous adenoma in a 40-year-old female as well as a literature review of previous cases. A high index of suspicion is required to make the diagnosis of SyT and prevent overtreatment.
RESUMEN
The nipple-areola complex is the origin of various morphologically distinct tumors and tumor-like lesions, which can be delineated from the special structures of the nipple, in particular the intramammary ducts, skin-appendages, and the intramammary stroma. Benign tumors are most frequent and this includes epithelial tumors such as mammary adenoma and syringomatous tumor of the nipple. Less commonly observed are benign mesenchymal tumors such as leiomyoma of the nipple, or tumor-like lesions like pseudo-lymphoma. With excess formations of the nipple, the different forms of polythelia and polymastia have to be considered.