Intraluminal Urethral Mass (Voiding Disorder/Posterior Urethral Valves)

mikt_8a_n.jpg: VCUG in a 3-year-old boy with voiding disorder (thin and weak urinary stream). A filling defect is visible distally of the posterior urethra running in the direction of the urethral flow. mikt_8b_n.jpg: During urethroscopy, a longitudinal structure can be seen distally to the colliculus protuding into the lumen. The distal end of this structure is not visible in this picture. mikt_8a_n.jpg and mikt_8b_n.jpg: The diagnosis is a urethral polyp which hinders micturition. Another leading symptom may be an intermittent hematuria.