hello doctor, my son had undergone a ultra scanning test and in the report doctor has found a impression "Right mild Hydroureteronephrosis", iam worried as iam unfamiliar with such medical term. could you expalin me about it and what immediate actions i should act because doctors didnt found it in x-ray and have adviced for IVP test. other lab reports were: Liver- normal, Gb- normal, CBD -normal, Pancreas- Normal, Spleen- normal, Kidneys RK - 10.8cm show mildly dilated Pcs and upper ureateus, LK - 10.9cm? normal urinary bladder, prostate - normal, no evidence of ascits seen, no evidence of Hymphadenopathy seen. Pls reply