Patient: Left kidney stone, is it necessary to do surgery?
Wei Benlin, Department of Urology, Peking University Shenzhen Hospital: First of all, it depends on whether the kidney is fluid-filled and whether the ureter is dilated. If the ureter is not dilated and there is no fluid in the kidney, the stone in the lower calyx can be left untreated. If the ureter is dilated, we need to check if there are stones in the ureter, and if there are, we need to deal with them. If the ureter is not dilated and there is fluid in the kidney, it is necessary to see if the fluid is worse than before. The fluid in the lower calyx alone can be left untreated and PCN can be done to retrieve the stone, but the effect of extracorporeal lithotripsy of the stone in the lower calyx is not good because the stone is not easily discharged and the stone in the lower calyx has little effect on the kidney function. Wei Benlin, Department of Urology, Peking University Shenzhen Hospital