Most common anomaly of upper urogenital tract is

Most common anomaly of upper
urogenital tract is -
a) Uretero pelvic junction stenosis
b) Ectopic uretheral opening
c) Ureterocele
d) Ectopic ureter
Correct Answer - A
Answer- A. Uretero pelvic junction stenosis
Most common cause of urinary tract obstruction in children -
Posterior urethral valves.
Most common cause of lower urinary tract obstruction in children →
Posterior urethral valves.
Most common cause of upper urinary tract obstruction in children 4
PUJ obstruction.