Multiple vascular eccrine spiradenomas: a case report and published work review of multiple eccrine spiradenomas.

Eccrine spiradenoma (ES) usually occurs as a solitary small nodule. It presents rarely as multifocal or multiple localized tumors arranged in a linear, zosteriform or nevoid distribution. We present a rare case of a 55-year-old woman who had a 48-year history of multiple vascular eccrine spiradenomas (VES) localized on the left side of the submandibular region and neck. All five tumors were skin-colored or pinkish-purple, and ranged in size 1.5-2.5 cm. Histologically, each tumor was composed of two characteristic cell types and many dilated vascular spaces were noted in the stroma. Contrast-enhanced computed tomography showed irregularly shaped, enhanced areas at the center of the tumors. A published work search revealed 35 cases of multiple ES, but multiple VES was extremely rare. We summarized the features of previously reported multiple ES and discuss the clinical and histological classification of ES.