A newborn male is admitted to emergency department due to oliguria and a midline mass located in the lower abdomen. What is your diagnosis?
A) Omphalomesenteric cyst
B) Wilms tumor
D) Bladder exstrophy
E) Posterior urethral valves
G) Patent urachus
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[sociallocker]Correct answer is E, Posterior Urethral Valves (PUV) disorder is an obstructive developmental anomaly in the urethra and genitourinary system of male newborns. A posterior urethral valve is an obstructing membrane in the posterior male urethra as a result of abnormal in utero development. It is the most common cause of bladder outlet obstruction in male newborns.[/sociallocker]