This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, 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 valve Most common cause of severe obstructive uropathy in children. 30% of children experienced end stage renal disease/CRF Dilated prostatic urethra. Hyperophy of bladder muscle Vesicouretic reflux seen in 50% of cases. Back pressure change: Hydronephrosis Distended bladder Thin urinary stream Recurent UTI because of urinary stasis