Posttraumatic priapism in a 7-year-old boy.

Priapism in childhood is most commonly a low-flow state due to sickle cell anemia. A high-flow priapism was seen in a 7-year-old boy following a straddle-injury-induced arteriocavernosal fistula. Penile aspiration, intracorporeal alpha-agonist injection and unilateral arterial embolization failed to resolve the priapism which eventually settled following a cavernosaphenous shunt.