Patient: Description of condition (time of onset, main symptoms, hospital visited, etc.): Hello Dr. He! Now my baby was just born almost two weeks ago, the results of ultrasound review two days after birth are as follows: (Fetal ultrasound before birth, left separation 27mm, right separation 11mm) Ultrasound description: left kidney size 6.2cm*3.0cm, parenchymal thickness 0.5cm. right kidney size 5.3cm*2.3cm, parenchymal thickness 0.8cm. both kidneys have normal morphology, clear contour lines, both kidney hilum The blood flow was smooth. The left kidney effusion range was 3.8cm*2.4cm and the right kidney effusion range was 1.9cm*1.4cm. The bladder wall was not thick, the lining was flat, and no lesion was seen in the lumen. Bilateral ureters were not dilated. The ultrasound suggests: bilateral renal effusion, no dilatation of both ureters, and no abnormality in the bladder ultrasound. Dr. Ho: 1. What should I do now? Is there any chance of not doing the surgery if the effusion shrinks with the full-term ultrasound? Is it possible that his hydronephrosis will decrease as he gets older? 2.According to the ultrasound, the thickness of his kidneys, are they still functional? 3. Is there a big risk to his life if he is operated? After all, he is a newborn baby! 4. Is the success rate of the surgery high? Can the function of both kidneys be preserved? Will there be any sequelae or complications after the surgery? 5.Can you introduce the procedure of examination and surgery? How long does it take for further examination? How long will the surgery take? I was worried from the time I was pregnant to the time he was born! It’s heartbreaking! I’m looking forward to hearing from Dr. He, thank you very much! Dr. He of the Affiliated Hospital of Ningbo University School of Medicine, Pediatric Surgery: 1, after the full moon ultrasound examination if the accumulation is still not so obvious, it is necessary to further examine, if the kidney function or the cortex has become thin, consider surgery. This degree of hydrocele is generally not good on its own. 2.From the current situation, the kidney function will not be affected too much. 3.This surgery is not a big risk for professional pediatric urologist, and it can be operated in one month. 4.The success rate of the operation is very high, both kidneys can be preserved and there are no postoperative sequelae. 5.The following examinations are ECT, MRI, etc. The operation time for one side is 1-2 hours. Your case does not necessarily need both sides to be operated, we have to wait for the examination results.