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
Straining and dribbling of urine in a male infant with recurrent urinary infection should lead to the suspicion of - 
Select and explain. 
A. Vesico-ureteric reflux, B. Posterior urethral valve, C. Pelvic ureteric junction obstruction, D. Phimosis
B: Posterior urethral valve
Answer: B: Posterior urethral valve 
Explanation: Ans. is 'b' i.e., Posterior urethral valve The informations provided in this question are ? i) Straining --> Sign of obstruction ii) Driblling --> Sign of obstruction and incomplete bladder emptying. iii) UTI --> May be due to urinary obstruction. o All these suggest the diagnosis of obstructive uropathy, and posterior urethral valve is most common cause of obstructive uropathy.