Infiltrating syringomatous adenoma presenting as microcalcification in the nipple on screening mammogram: case report and review of the literature of radiologic features.

Infiltrating syringomatous adenoma (ISA) of the nipple, first described by Rosen in 1983 (Am J Surg Pathol, 1983, 7, 739-745), is a rare benign tumor that can be misdiagnosed as a malignancy. ISA is characterized by its specific location in the subareolar region, its distinct histologic appearance resembling sweat duct or syringomatous tumors, and its locally infiltrating growth. We describes a case of ISA of the nipple presenting as microcalcification that was found on screening mammography. We also reviewed previously reported radiologic features of ISA.