Can renal pelvis dilatation heal itself?

Can renal pelvis dilate self-heal? Dilated renal pelvis is often B-ultrasound tips, indicating that the kidney has a certain amount of water, because ureter obstruction or bladder urethra obstruction caused by the common cause is stones, prostate hyperplasia, ureter stricture, these diseases, resulting in urine excretion blocked, resulting in renal hydronephrosis. Therefore, for renal pelvis dilatation caused by urine retention, it can be self-healing, while for prostatic hyperplasia, urethral stricture, ureteral stricture and renal pelvis dilatation caused by ureteral stones, it cannot be self-healing. only by removing the cause of obstruction can renal pelvis dilatation disappear.