A case of multiple eccrine spiradenoma associated with multiple trichoepithelioma

Eccrine spiradenoma is a benign adnexal tumor which is differentiated into the direction of eccrine gland. Occasionally, eccrine spiradenoma is associated with other skin tumors, especially cylindroma or trichoepithelioma. A 55-year-old woman with multiple trichoepithelioma on the face presented with paroxysmally painful three papules on the face and the right arm for 5 months. On low magnification, the tumor was a sharply demarcated lobule surrounded by a fibrous capsule in the dermis. On higher magnification, the lobule is composed of basophilic cells arranged in characteristic small rosettes, two cell types of which are large central cells of pale nuclei and small-peripheral cells of dark nuclei. We, herein, report an unusual case of multiple eccrine spiradenoma associated with multiple trichoepithelioma.