Glomus tumor with an atypical location

Abstract

Background: Glomus tumors are benign and rare vascular tumors, with an incidence of less than 2% in relation to all soft tissue tumors. About 75% occur in hand, especially in the nail bed, even though these tumors may also occur in atypical locations. They are characterized by a triad composed of pain, cold intolerance, and point tenderness. Case Presentation: We present a clinical case of a male patient with 67 years old with a painful lesion on the subcutaneous tissue of the knee with 5 years of evolution. The pain exacerbated with the cold. He underwent surgical excision with pain resolution, and no recurrence or metastasis was found at 30-month follow-up. Conclusion: The rapid diagnosis of glomus tumors is important to avoid treatment delays leading to chronic pain. It is important to consider glomus tumors in the differential diagnosis of subcutaneous lesions.