Intramuscular hemangioma (IMH) of the upper extremity is extremely rare and mostly found in children. The authors presented a 39-year-old female with an unusual case of fixed flexion deformity of the middle finger and ring finger with deep forearm pain for three years. The patient was diagnosed with IMH of the flexor digitorum superficialis muscle. Excision of the IMH was performed and intra-operatively passive extension of PIP joints was achieved. After 12 months follow-up, the patient was satisfied with the outcomes with no recurrence of flexion contracture. IMH of the upper extremity is an uncommon disease, especially in adults. It should be considered in patient who presented with deep forearm pain and finger flexion deformity. Early investigation should be performed and surgical removal remains the treatment of choice. Furthermore, tendon transfer should be reserved in case of functional deficits.

Keywords: Intramuscular hemangioma, Flexion contracture, Forearm, Soft tissue tumor

DOI: doi.org/10.35755/jmedassocthai.2020.06.10680

Received 28 Jan 2020 | Revised 14 Apr 2020 | Accepted 15 Apr 2020