We present the case of a 22 year old man who developed a permanent penile erection after a blunt perineal trauma. Conservative treatment in terms of cooling, compression and puncture of the cavernosal corpora with blood aspiration failed to resolve the priapism. Angiography confirmed the diagnosis of high-flow priapism caused by an arteriovenous fistula. Interventional coil embolization of the fistula was effective meaning that complete detumescence was achieved and erectile function was preserved.