Right Kidney identified with a) abrupt narrowing of PU Junction, partial obstruction,b) mild hydronephrosys, c).reduction in renal parenchymal thickness. No symptoms. Kidney function tests are normal. Came up during sonography done during annual checkup. There are differing opinions of various doctors. I have been recommended surgery to remove obstruction. Another Doctor feels that this is a rare condition named congenital megacalyces. Even after surgery, there wont be any improvement in hydronephrosys/ kidney function. The CT Scan and Renogram xrays are uploaded herewith