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Can unilateral renal pelvis dilatation lead to lower urine tract obstruction?

Mar 2015
User rating for this question
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Answered by

OBGYN, Maternal and Fetal Medicine
Practicing since : 2009
Answered : 4867 Questions

My wife is pregnant and its her 31st week, we went for growth scan and it resulted saying baby right pelvis (kidney) is 15.7mm and doctors said they wont be able to tell anything at this point of time and cases of these kind are like 1 in 20 these days. It may get regressed after birth and may be up to one year of birth and in worse case scenario surgery needs to be done.

Some one told me that there is a possibility of lower urine tract obstruction

we are very much worried. Please advise, looking forward a quick reply
Tue, 29 May 2018 in Pregnancy
Answered by Dr. Deepti Verma 1 hour later
Brief Answer:
Nothing to worry

Detailed Answer:
Hi dear,
I have gone through your question and understand the concerns.
Unilateral renal pelvis dilatation is unlikely due to lower urinary tract obstruction..
It is likely to be transient, which will resolve after birth.
Other causes can be vesicoureteric reflux, pelviureteric junction obstruction etc.
These are minor conditions and can be treated after birth
There is nothing to worry.
The delivery should occur in a centre with pediatric urology facility for best assessment and treatment of the baby.
Hope you found the answer helpful.
Dr Deepti Verma
Maternal and fetal medicine specialist
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