Extradigital Glomus Tumor: A Case Report of Pain on Back Over 10 Years

Abstract

Glomus tumors are benign neoplasms of the glomus body, commonly found in the subungual area of digits. Occasionally, these tumors occur outside the digital region, making diagnosis more challenging. We report a case of 62-year-old woman who experienced pain on her back for 10 years. A careful examination revealed a small erythematous papule on the interscapular area. Dermoscopic findings showed homogenous, unstructured purplish area. A punch excision was performed, and histological and immunohistochemistry analysis of the tissue was consistent with a glomus tumor. The patient reported no pain following the procedure. This case report highlights the clinical, dermoscopic, and histological features of extradigital glomus tumors. It also emphasizes the importance of including these tumors in the differential diagnosis of painful nodules and demonstrates the effectiveness of complete surgical excision in achieving excellent outcomes.