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What does fluid in my baby's kidney mean?

I'm pregnant with a boy and during my ultrasound, the doctor saw fluid in his kidney. What does this mean?
Submitted by American Baby Team

This is most likely a condition called pyelectasis, which means that urine is collecting in your baby's kidney and not passing out into the amniotic fluid like it normally should. It is most commonly seen in boys and is usually harmless as long as his kidneys are otherwise healthy and there's enough amniotic fluid surrounding him (since after the second trimester, the amniotic fluid is mainly composed of baby's urine).

Your doctor will probably continue to monitor the fluid in your son's kidney for the remainder of your pregnancy to ensure that it's not accumulating past a safe level. He may also perform another ultrasound to rule out the possibility of an obstruction, which can be a more serious, but very rare, condition. Most cases of pyelectasis get better after your baby's born and has had a few wet diapers.

The answers from our experts are for educational purposes only. Please always refer to your child's pediatrician and mental health expert for more in-depth advice.

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Im 38 weeks pregnant and i am having a lot of watery white discharge. does that mean anything?
Submitted by leondraprowell
If you receive this news what are the odds that the baby is NOT a boy?
Submitted by meghann1010
My son had the same thing when I was pregnant. His kidney did not fix itself after he was born, and at 6 months old he had to have his left kidney removed. It was extremely hard dealing with all the tests and then the surgery. I had an awesome doc though, and he is now a healthy, happy 3 year old. He doesn't have to go back to his specialist anymore. It was a scary experience, but he is a tough little man!!! I am now pregnant with my second son and his kidneys are a little dilated too. The say it is very common in boys. He will have to have an ultrasound on his kidneys when he is born to make sure they are ok. By this time, they already knew my first sons kidney would probably not unblock after birth.
Submitted by kristylynn1980
I am 36 weeks pregnant and I am going thru the same thing. I go every month for an ultrasound to monitor the blockage in the urethra. Some times the kidney is dialated and other not so much. Since it is a mild case, the baby will have an ultrasound performed once born and the pediatrian will then decide what action to take next. Most cases resolve itself, more severe cases you'll be referred to a pediatric urologist and possible surgery. I hope this helps and good luck!
Submitted by racurran