Upper arm glomus tumor

Abstract

Upper arm glomus tumors are uncommon, benign vascular growths originating from skin glomus bodies. They typically cause severe, paroxysmal pain triggered by cold, pressure, or touch. Diagnosis can be complex due to mimicry of other conditions, but histopathological examination confirms the presence of glomus cells. In a case study, a 46-year-old woman with an Upper arm glomus tumor experienced pain and a lump in her left arm. Ultrasound identified a well-circumscribed, heterogeneous, hypoechoic, pedunculated mass with internal vascularity and MRI showed a lobulated soft-tissue mass with skin involvement and polypoid projection, alongside axillary lymphadenopathy and skin thickening. Following an open biopsy that confirmed the diagnosis of a glomus tumor, the patient experienced complete resolution of symptoms after surgical excision, with no recurrence during the 24-month follow-up period.