Extradigital Painless Mass of the Thigh: A Rare Presentation of Glomus Tumors

Glomus tumors (GT) are a rare benign disease that originates from the neuromyo-arterial glomus body, characterized by a triad of aching pain, extreme tenderness, and temperature sensitivity, with the hand being its favoured location. We report a rarely presented GT on atypical site in a 65-year-old female patient who came to the orthopaedic outpatient department with swelling at the medial aspect of the left thigh for three years. It has been increased in size for two years, and it was painless. On examination, it was about 7×9 cm in size, found 6 inches proximally to the medial condyle of the tibia, non-tender, non-fluctuant, erythematous in colour with a white patch over it. Fine needle biopsy reported as GT. Magnetic resonance imaging (MRI) showed the site, size, and expansion to the surrounding structure, such as encasement of the femoral vessels by the tumors. The mass was surgically excised. Biopsy report confirmed encapsulated tumors. A 2-year follow-up, every six months, was carried out for any recurrence, and she was discharged from the clinic at her last follow-up.