R.D.
Hi R.,
Our son was also diagnosed with hydronephrosis. He was a 32weeker with a myriad of anomalies, including one kidney. He received antibiotics while in the NICU for a month. Since then we continue to see Urology and Neprhology at Childrens. He had a VCUG, a test to see if the kidney is refluxing a few months ago and it showed only mild dialation - like you they told us not to worry just keep an eye on him if he spikes a fever to call. We go back in April for another round of tests. Did they perform a VCUG on your son? it is scary to hear that something is wrong with your son, just stay on top of things and ask as many questions as you need to of the Dr's. Take Care,
Rory