true of posterior urethral valves

Question Number 1483

the following are true of posterior urethral valves

a) they are commoner than valves in the anterior urethra
b) The prostatic urethra is usually narrowed
c) oligohydramnios is a sign of severe obstruction
d) The prognosis for renal function is better when reflux is present
e) in the presence of incontinence proloinged nephrostomy drainage is usually the treatment of choice

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