The most frequent cause of high-flow priapism is penile or perineal closed
trauma with laceration of the cavernous artery and the formation of an arte
rial - lacunar fistula. We present the case of a high-flow priapism due to
closed perineal trauma and damage to the left cavernous artery which comple
tely resolved following conservative treatment. The case was documented by
duplex Doppler ultrasound and selective pudendal arteriogram before and aft
er resolution.