Idiopathic high-flow priapism in a pediatric patient.

High-flow priapism is a very rare condition in children. The most common cause is perineal trauma, which is a major cause of arterio-cavernosal fistula. A few pediatric patients have high-flow priapism without an obvious cause. There are many therapeutic modalities for this condition, depending on the etiology. We report a case of idiopathic high-flow priapism in a 6-year-old boy who underwent repeated superselective embolization.