My son, six years old, was hospitalized thrice when he was three years old with high fever - 105 F. Each time he was treated with antibiotics and discharged after about 10 days of hospitalisation. Third time it was diagnosed that he had bilateral urinary reflux (grade 4). He was on a maintenance dosage of trimethoprim. We performed reflux procedure at Coimbatore and he had no fever for about 1.5 years. Last December he had one more UTI and was treated with antibiotics at home. Nuclear scan done two years ago indicated his left kidney was scarred and shrunk. Functioning 33%. We repeated the scan last month and the functioning of left kidney has reduced to 27%. His vitals are normal (blood pressure, urea level, creatinine level) We are worried that his kidney may shrink further and lead to lower functioning and other complications. Is it possible to stop the shrinkage and strengthen the functioning? Is it possible that his kidney would grow in future?