Nodular hidradenoma - A report of three cases and review of the literature

BACKGROUND. Nodular hidradenoma is a rare adnexal tumor most likely arising from the eccrine gland. OBJECTIVE. We describe three cases of a nodular hidradenoma presenting as an expanding nodule on the forehead (case 1), left lower extremity (case 2), and left neck (case 3). We discuss the clinical and histologic features of this tumor and present a re view of the literature. CONCLUSIONS. This report highlights the salient histologic findings that distinguish nodular hidradenomas from other adnexal tumors and emphasizes the benefit of complete local excision to prevent recurrence of these tumors. (C) 1998 by the American Society for Dermatologic Surgery, Inc.