This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vesicoureteral Reflux, Subject name: Pediatrics
Posterior urethral valve - true A/E - 
Select and explain. 
A. Palpable bladder, B. Hydronephrosis, C. Painful stress incontinence, D. Recurrent UTI
C: Painful stress incontinence
Answer: C: Painful stress incontinence 
Explanation: Ans. is 'c' i.e.. Painful stress incontinence Posterior urethral valveo Most common cause of severe obstructive uropathy in children,o 30% of children experienced end stage renal disease/CRFo Dilated prostatic urethra,o Hypertrophy of bladder muscleo Vesicouretic reflux seen in 50% of cases,o Back pressure change:HydronephrosisDistended bladderThin urinary streamRecurent UTI because of urinary stasis