Pregnant women who have undergone prenatal check ups should have a good understanding of the double renal pelvis. As a type of B-ultrasound examination, the presence of the double renal pelvis is particularly important because it mainly detects fetal vital signs. Therefore, if there are problems during the double renal pelvis examination, expectant mothers will be particularly nervous. So, what does it mean that the double renal pelvis is not separated?
It is not a strange phenomenon to not observe obvious renal pelvis separation. On the contrary, it is still normal because it indicates that the baby is developing and growing healthily. Once renal pelvis separation occurs, it is considered to be caused by partial organ hydronephrosis in the fetus, and timely examination should be carried out if conditions permit.
Double renal pelvis separation is actually a manifestation of fetal renal hydrocephalus, with a maximum value of around 1 centimeter. From a scientific perspective, it can be considered physiological hydrocephalus. On ultrasound, an elliptical echo area will appear in the center of the kidney, which is normal if it does not exceed 10 millimeters. At birth, 16 millimeters is a benchmark, and there is no problem if it does not exceed this standard. However, if it continues to increase, examination or subsequent treatment should be considered.
During pregnancy, there are two reasons for fetal renal pelvis separation: physiological and pathological. Physiological refers to the condition caused by the fetus holding urine, and as a pathological condition, it can be much more serious, most likely kidney or ureteral diseases. Once discovered, timely treatment is necessary.
