Pelvic arteriovenous malformation mimicking seminal vesicle cyst.

Congenital pelvic arteriovenous malformations are rare entities, especially in males. Presenting symptoms, if any at all, are commonly a mass, thrill, bruit, or pain. Treatment options include surgical extirpation, embolization, or a combination of both. This case provides support for the last option in a patient presenting with symptoms localized to the seminal vesicles.