I had 14 mm stone in right ureter which was rirs 2 year ago. Since then i noticed then after just moderate water consumption before ultrasound right kdiney shows prominence of pelvicalcyal system. And after emtying blader there is just mild renal pelvis. Gfr is 100. Why my renal and calcyal system becomws prominwnt even by small amount of water before usg while left kidney remain normal. Is this sign of damage? Please reply !!