Congenital posterior urethral polyps.

Congenital posterior urethral polyps are benign growths that can cause a variety of symptoms in young boys. They are pathologically distinct growths usually discovered by voiding cystourethrography. We present 5 cases of congenital posterior urethral polyps, and discuss the presentation and pathophysiological status of these lesions. These lesions must be considered in the differential diagnosis of voiding dysfunction in young boys.