What does the right renal sinus mean?

What is the meaning of right renal sinus separation? The meaning of right renal sinus separation is hydronephrosis. How many millimeters does our B-ultrasound normally report renal sinus separation? The reason for hydronephrosis is divided into physiological and pathological: 1. Physiological hydronephrosis. For example, when we do B-ultrasound, the doctor tells us to drink a lot of water. If we drink more water and the bladder is more swollen, it will cause mild hydronephrosis in both kidneys. This mild hydronephrosis is due to excessive filling of the bladder, resulting in urine reflux. When we review B-ultrasound urine next time, we should not hold urine too much. When hydronephrosis disappears, it is physiological. 2. Pathologically, normal is due to ureteral stones, tumors, ureteral stricture, or residual urine in the bladder, resulting in hydronephrosis. This kind of hydronephrosis, we need to further improve the relevant examination, clarify the cause of hydronephrosis, treat the cause, we can reduce or disappear the hydronephrosis.