Brief Answer:
Please upload the report.

Detailed Answer:
Hello
Thanks for writing to us with your health concern.
Please upload the ultrasound scan report.
I need more information before I can comment on it.
I hope you understand that I need to go through the report before I can guide you.
Please upload it, I will then explain everything to you in a detailed manner.
Looking forward to hearing from you.
Take care.

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Brief Answer:
It is a normal finding, do not worry.

Detailed Answer:
Hello
Thank you for uploading.
I have gone through your report.
The cisterna magna is one part of the brain.
When it is enlarged beyond normal size, it is possible that the baby is having some chromosomal defect or disorder.
This possibility is more, if there are associated structural changes or abnormalities in the brain.
In your case, there is nothing abnormal seen just a prominent cisterna magna.
This is called isolated prominent cisterna magna.
Multiple studies have shown that when this is the case, the babies are normal, and there is no risk .
SO please do not worry.
THis is a normal anatomical variant, and in absence of any other dangerous findings on the ultrasound scan, there is no risk or danger to your baby.
Please stop worrying.
Take regular folic acid supplements.
If you wish, you can post a question to me directly anytime, by clicking on the following link -
http://doctor.healthcaremagic.com/doctors/dr-aarti-abraham/64623
Take care.

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