Scalp Arteriovenous Malformation: A Rare Case

Peripheral arteriovenous malformations (AVMs) are rare vascular pathologies. We report a case of scalp AVM presenting with a palpable mass in the left temporal region and tinnitus. Thirty-year-old female patient had no previous complaints or trauma history in her anamnesis. Physical examination revealed a 3x1 cm pulsatile mass in the left superficial temporal artery tracing. Findings consistent with AVM were detected in the Doppler ultrasonography. After informed consent was obtained, the mass was surgically excised under local anesthesia and discharged the same day. Arteriovenous malformations can develop in 2 ways. Congenital AVMs are more common and develop as a result of defects in the angiogenesis process. The acquired type is less common and usually develops secondary to trauma. The clinical presentation is usually asymptomatic. Symptomatic cases with progressive growth need to be treated. Treatment may involve embolization or ligation of the feeding artery or surgical excision.