Posterior Urethral Valves

• Etiology: anterior fusion of plicae collicularis at level of verumontanum
  — Types – Type I is 95%, Type II doesn’t exist, Type III is 5%
• VCUG: obstruction by veil shaped valve leading to dilated posterior urethera, trabeculated thick walled bladder, bilateral hydroureteronephrosis from vesicoureteral reflux -> renal damage so kidneys can be small + echogenic on US
• Complications: at risk post-operatively for recurrent urinary tract infections due to dilated genitourinary system
• Clinical: in-utero can have oligohydramnios / urinoma / urine ascites, pulmonary hypoplasia due to oligohydramnios

Cases of Posterior Urethral Valves