Extradigital Glomus Tumor on Hypothenar Region Diagnosed on Ultrasound – A Case Report

We report a case of 32-year-old female with a 6 months history of excruciating pain in hypothenar region of the left hand. Pain was aggravated by pressure, touch, and cold temperature. Musculoskeletal ultrasonography revealed – a well-defined, hypoechoic lesion in deep dermis, and subcutaneous fat in the left hypothenar eminence with mixed arterial and venous signals within on Doppler study, suggestive of – subcutaneous vascular lesion and diagnosis of glomus tumor was suggested. The patient underwent excision of the lesion. Pathological examination of the specimen showed a glomus tumor and excluded malignant transformation to glomangiosarcoma. Extradigital glomus tumor can be diagnosed on ultrasound with high confidence in appropriate clinical setting.