Patient's question:
NoDoctor's answer:
Renal sinus separation is divided into physiological renal sinus separation and pathological renal sinus separation. Physiological renal sinus separation (infantile urinary retention) is generally milder than pathological renal sinus separation (chromosomal abnormalities), often being bilateral and symmetrical. The separation of the central collecting system typically appears as elongated strips. Renal caliceal dilation is rarely detected, with widths generally not exceeding 1.5mm, and the kidneys are of normal size and shape. This is a common phenomenon; if the separation is less than 10mm, the likelihood of chromosomal abnormalities is very low.A standard ultrasound examination of the urinary system should be performed one week after the fetus is born. If the renal pelvis separation is ≥10mm, a comprehensive evaluation under the guidance of a specialist is required, including nuclear renal imaging, excretory urography, etc., to identify the underlying cause. If the renal pelvis separation is between 4-10mm, follow-up ultrasound examinations should be conducted at 3 months and 6 months after birth. If the renal pelvis separation is 4mm, it can be considered normal.