A Case of Multiple Eccrine Spiradenoma in an Annular Distribution

Seo, Ji Young; Kim, Soo Jin; Park, Hai Jin; Haw, Sik; Kim, Seong Hyun

Abstract

Eccrine spiradenoma is a rare, benign, slow-growing adnexal neoplasm. It has been historically designated as an eccrine tumor, but is now considered an apocrine tumor. It typically presents as a single, tender, pink-to-blue, well-defined intradermal or deeply subcutaneous nodule on the head or trunk. In rare cases, multiple tumors are present and can be arranged in various patterns including zosteriform and/or linear distributions. A 40-year-old female patient presented with a 7-year history of multiple, small, tender nodules distributed in an annular pattern on her left shoulder. The diagnosis of eccrine spiradenoma was made by clinical and histopathological findings, and the larger nodules were surgically removed. We herein present an unusual case of multiple eccrine spiradenoma in an annular distribution.