Posterior urethral valves are a common cause of bladder outflow obstruction in newborn males. The magnitude of the problem varies in each case. The severity depends on the period of gestation at which it manifests. The earlier it manifests in utero the worse is the antenatal and postnatal prognosis.
In my case the anomaly scan at 20 weeks did not reveal any pyelectasis. First presentation was only after 32 weeks. There were no associated anomalies, no oligohydramnios and no fetal ascites. Hence the postnatal prognosis was good.
The baby was catheterised after birth. There was minimal renal dysfunction which improved after couple of days.
Surgery was planned on day 4 of life.