Patient Question: I am 31 weeks pregnant and recently found out that my baby has a duplicate kidney, please help me to read my ultrasound sheet. Will the baby have recurrent urinary tract infections and fever before the surgery, and will the kidney function be preserved after the surgery or will one kidney lose its function? Is the success rate of the surgery high? I can’t accept that my baby only has one kidney! Does my ultrasound show that this is a serious case? Doctor’s reply: The prognosis of simple duplicated kidney without hydronephrosis is good and does not require surgery; children with duplicated kidney with hydronephrosis (usually hydronephrosis in the upper half of the kidney) due to obstruction at the end of the duplicated ureter or abnormal opening (not opening in the bladder) can have clinical incontinence or recurrent urinary tract infections, and there are various ways to treat them according to age, degree of hydronephrosis and function of the affected kidney: 1. If the function of the hydronephrosis half of the kidney is almost completely lost, the upper half of the hydronephrosis kidney and the duplicated dilated ureter are removed, and the lower half of the kidney and the lower ureter are preserved; 2, if the hydronephrosis kidney is still functional, it is generally preserved, and the end of the ureter is surgically released from obstruction or opening abnormalities; 3, the duplicated kidney is mostly accompanied by ureteral cysts (cysts located in the bladder), and the cysts can also be cystoscopically opened in the neonatal period to release obstruction and protect the kidney function However, a large proportion of children will have combined vesicoureteral reflux and may require surgery for ureteral reflux later. According to the ultrasound you provided, your baby’s right duplicated kidney with hydronephrosis and ureteral dilatation is recommended for close follow-up after birth and may require surgery. If the hydrocele worsens or symptoms such as recurrent urinary sensation appear, surgery should be performed promptly, even in the neonatal period. If the hydrocele and renal function are stable and there are no clinical symptoms, surgery can be performed when the baby is older. The surgical efficacy is exact and the success rate is high. Most children with duplicated kidney will have a normal lower kidney, which will be preserved during surgery and will not result in a solitary kidney. Please don’t worry, don’t worry about your pregnancy, and remember to review the ultrasound 1 week after delivery.