Pedunculated polyp of the posterior urethra in a three-year-old boy, demonstrated by voiding cystourethrography.
D002675:Child, Preschool; D006801:Humans; D008297:Male; D011127:Polyps / Q000000981:diagnostic imaging*; D014523:Urethral Neoplasms / Q000000981:diagnostic imaging*; D014567:Urography