<prompt> A male child presents with repeated urinary infections and failure to gain weight. A MCU was carried out as shown in plate, most probable diagnosis is?Posterior urethral valveMeatal stenosisBladder diverticulaBladder polyp  <response>: a. Posterior urethral valveRef: Nelsons 20e p 2562-2567, Ghai 8e p 485-486Voiding cystourethrogram in an infant with posterior urethral valves showing the dilation of the prostatic urethra and the transverse linear filling defect corresponding to the valves. 