Separation of the left renal collecting system by 22mm usually suggests hydronephrosis, and whether it is serious or not mainly depends on the treatment effect, etc. If the treatment effect is good, it is usually not serious. If the treatment effect is good, it is usually not serious; if the treatment effect is poor, long-term compression of the renal parenchyma, along with continued damage to the kidney, may lead to renal failure, which is more serious at this time.
Hydronephrosis is mainly caused by urinary tract obstruction, which may be caused by urinary tract stones, congenital ureteral development abnormality, urinary tract infection, and swelling compression.
When the urine is not discharged well and accumulates in the renal collecting system, it causes hydronephrosis, which leads to separation of the renal collecting system. If the treatment is effective and the obstructing factors are relieved, it is usually not serious; if the treatment is not effective and the renal parenchyma is compressed for a long period of time, it may lead to renal failure as it continues to damage the kidneys, which is more serious at this time.
If patients are found to have left renal collecting system separation, it is recommended to go to regular hospitals in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment under the guidance of the doctor.