To answer your questions:
1) Both medical and surgical management of severe reflux appear to be of roughly equal efficacy and choosing between these options is dependent upon clinical judgment. Medical therapy in such children includes daily prophylactic antibiotics which are usually continued until the reflux resolves (as determined from annual radionuclide cystography), the child reaches the age of five to seven, the time at which repeat infection, if it occurs, is unlikely to produce new scars.
2) It is possible that the VUR may resolve.
3) Surgery should be considered in the following case: the presence of gross reflux and ureteral dilatation in a young child (particularly if under two years of age) even without marked scarring, since new scars will develop in up to 60 percent of these cases. It seems that your child may fall into this category, and the possibility of surgery should thusly be considered.
4) VUR is present in approximately 1 percent of newborns, 30 to 45 percent of young children with a UTI, and in almost all children with renal scars. Unfortunately, I am not familiar with the medical center in Asia.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
Medical Weblog:
kevinmd_b
Bibliography:
Rose, et al. Diagnosis and treatment of vesicoureteral reflux and chronic pyelonephritis. UptoDate, 2004.