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
[{'content': 'Posterior urethral valve - true A/E ? \nSelect and explain. \nA. Palpable bladder, B. Hydronephrosis, C. Painful stress incontinence, D. Recurrent UTI', 'role': 'user'}, {'content': "Answer: C \nExplanation: 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", 'role': 'assistant'}]