Hydronephrosis caused by ureteral stones may lead to edema. Hydronephrosis is a kidney disease in which urine cannot be discharged from the kidneys to the bladder, causing it to accumulate in the kidneys, and the blockage of the ureter or urethra caused by ureteral stones is one of the main causes of hydronephrosis. Edema is a symptom caused by excessive accumulation of fluid in the tissues and spaces of the body, resulting in swelling. As the occurrence of hydronephrosis will lead to direct adverse effects and damage to kidney function, and the further development of the disease once caused by renal insufficiency, it is likely to cause edema symptoms. The common symptoms caused by hydronephrosis include back pain, fever, pain in urination, dysuria, frequent urination, etc. If you have any suspected symptoms, you should consult a doctor as soon as possible.