Whether it is a pregnancy ultrasound or a normal physical examination for ordinary people, the absence of bilateral renal pelvis separation is a normal phenomenon. In addition, if the bilateral renal pelvis separation is less than 1cm, it is also mostly normal. However, if the pregnant woman has a renal pelvis expansion of ≥10 millimeters after 30 weeks of gestation, or the renal pelvis separation distance in the general population is greater than 1cm, it is considered abnormal and requires further review and confirmation.
Is it good to have no separation of the bilateral renal pelvis?
1. The collecting system of a normal fetal kidney may have mild separation. The separation diameter can reach 6 millimeters, and renal pelvis expansion ≥10 millimeters or the presence of renal calyx expansion after 30 weeks of gestation indicates that there is hydronephrosis in one kidney of the fetus. Treatment: It is considered a possible manifestation of abnormal fetal ureter development, and it is recommended to regularly review and observe the fetal development.
2. If the physical examination reveals no separation of the bilateral renal pelvis, it is a normal phenomenon. The renal pelvis of a normal person is naturally unseparated. Separation less than 1cm may be normal. When undergoing a urinary system ultrasound, one needs to retain urine. For some individuals, when the bladder is full, the renal pelvis may show separation. Treatment: In this case, after the patient urinates, that is, after the bladder is emptied, the renal pelvis can be re-examined, and it can be found that this separation decreases or disappears.
3. If the separation of the renal pelvis persists after emptying the bladder, there may be kidney hydronephrosis. Treatment: A series of other examinations, especially imaging examinations, need to be performed to determine the cause of the bilateral renal pelvis separation, whether it is caused by stones, tumors, or other reasons, as different diseases require different treatment plans.
