Abstract Book - 26th ESPU Congress, Joint Meeting with ICCS + SPU + AAP/SOU + AAPU + SFU

60 / 492

15:47 - 15:50
S3-5 (CP)
URETHRAL POLYP: A CAUSE OF PRENATAL URINARY OBSTRUCTION
Ruben LAMAS-PINHEIRO1, Leonor CARMO1, Mariana DIAS 1, Carla RAMALHO 2, Ana Catarina FRAGOSO 1, Carlos MARIZ 1
and José ESTEVÃO-COSTA1
1) Hospital São João, Faculty of Medicine, Pediatric Surgery, Porto, PORTUGAL - 2) Hospital São João, Faculty of
Medicine, Gynecology and Obstetrics Department, Porto, PORTUGAL
PURPOSE
Lower urinary tract obstruction is a rare congenital condition usually caused by posterior urethral valves. Herein, a
clinical case of hydronephosis due to a novel cause of prenatal urethral obstruction is reported.
PATIENT
A male newborn, with prenatal diagnosis of bilateral hydronephrosis, megacytis and left ureteral dilatation was born
product of a 39 weeks gestation. After post-natal US confirmation of bilateral uretero-hydronephrosis, voiding
cystourethrogram showed bilateral grade V vesico-ureteral reflux and a filling defect in the bladder neck. At cystoscopy
a posterior urethral polyp (PUP) was found, which was resected with no complications.
RESULTS
Histologic examination revealed a fibroepithelial lesion consistent with congenital PUP. At 4-year follow-up there was no
evidence of recurrence, but oxybutynin became necessary to control bladder dysfunction.
CONCLUSIONS
Posterior urethral polyp presents later in life but, as the present case illustrates, it should be kept in mind as a possible
cause of fetal/neonatal lower urinary obstruction; transurethral resection is usually effective.