- 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 urethra, 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
Radiology Cases of Posterior Urethral Valves

