Joon Tae Kim

The nail unit excision specimen showed collections of cuboidal cells and spindled cells within the corium that were consistent with a diagnosis of a glomangiomyoma, a rare glomus tumor variant (Figure). Glomus tumors are benign neoplasms comprising glomus bodies, which are arteriovenous anastomoses involved in thermoregulation.1 They develop in areas densely populated by glomus bodies, including the fingers, toes, and subungual areas.