High-flow priapism is unusual and is most often due to blunt perineal trauma with resultant laceration of the cavernosal artery, creating an arteriocavernosal fistula. Although few cases have been reported, the consensus on management appears to be embolization of the fistula with autologous clot, alone or in combination with Gelfoam. We present a case of high-flow priapism treated in this manner. The embolized pseudoaneurysm evolved into an abscess that eventually spread to the perineum. The rarity of this entity and the postprocedural morbidity are reported.