Fibroepithelial polyp of the prostatic urethra in an adolescent.

Benign fibroepithelial polyp of the prostatic urethra is a rare congenital lesion most commonly diagnosed in the pediatric population because of diverse urinary symptoms. We report a case of a 16-year-old adolescent boy who presented with urinary retention. Imaging and endoscopic studies confirmed the presence of a polypoid lesion at the bladder base/posterior prostatic urethra. Following transurethral resection of this polypoid mass, the diagnosis of a congenital fibroepithelial polyp of the prostatic urethra was rendered by pathologic evaluation. Although this is considered a benign lesion with no previous reports of recurrence or malignant behavior, it produces dramatic urinary symptoms in the pediatric population with a wide differential diagnosis. Imaging and endoscopic findings may suggest a malignancy and are not sufficient to render a precise diagnosis, which can only be made by pathologic examination.