Intramuscular arteriovenous malformation in the upper extremity

Abstract

Vascular malformations are developmental anomalies of vessels, and arteriovenous malformations are the vascular malformationswith the high-flow pattern. Arteriovenous malformations are most often located in the head and neck region. Theupper extremity location for arteriovenous malformations is relatively rare. A case of intramuscular, symptomatic, forearmarteriovenous malformation is reported. The 11-year-old female patient was referred with pain, and clinical examinationrevealed a deep mass on the volar side of the forearm. Ultrasonography revealed a high-vascularized mass which wasintraoperatively identified inside the flexor digitorum superficialis muscle fibers and MRI was revealed with no connectionswith the neurovascular structures. The mass was safely excised inside the muscle fibers. Located both in the forearm andinside the muscle fibers show the infrequency of presented arteriovenous malformation. Surgical excision may be a reliableoption for these masses because of being symptomatic and focal.