We may not even have been aware of some of them. Now we are in a position to understand their natural history and process of evolution. Another example is gall stones in the newborn. Gallstones in newborns do not need surgery. Picked up on sonography,these may be followed periodically,to disappearance.
Paediatric urology is another subject that teaches the discipline of conservative thinking.
Vesico ureteric reflux is known to resolve spontaneously. 3 and 4 demonstrate a long follow up with VUR treated conservatively. An IVU demonstrates normal size of the pelvis and ureters in the same patient, where surgery was not performed. This child required surgical correction of reflux. A similar situation exists with pelviureteric or vesicoureteric junction obstruction.