Hydronephrosis is swelling of the kidneys, caused by a buildup of urine. It shows up clearly on a fetal ultrasound in the third trimester.
This condition can happen if a tube that drains urine from your baby's kidneys is blocked. Or it can happen when the valve to the bladder isn't working as it should. Sometimes, there is no lasting problem at all.
For most babies, this condition goes away just before or after the baby is born. If the kidney swelling doesn't get better after birth, a baby can have urinary tract infections or kidney problems.
After your baby is born, your doctor will do an ultrasound test to see if there still is a problem.
If your baby's kidneys are still swollen after birth, the doctor may:
Follow-up care is a key part of your child's treatment and safety. Be sure to make and go to all appointments, and
call your doctor or nurse call line if your child is having problems. It's also a good idea to
know your child's test results and keep a list of the medicines your child
Go to https://www.healthwise.net/patientEd
Enter P504 in the search box to learn more about "Learning About Fetal Hydronephrosis."
Current as of:
August 12, 2016
John Pope, MD - Pediatrics
& Adam Husney, MD - Family Medicine & Peter Anderson, MD, FRCS(C) - Pediatric Urology
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