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Dr. Andrew Rynne
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Dr. Andrew Rynne

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Exp 50 years

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What Does Enlarged Posterior Fossa During Pregnancy Mean?

Hi, may I answer your health queries right now ? Please type your query here...My dtr is almost 5 months pregnant and had her ist sono yesterday. It was read by a midwife and she said the posterior fossa was large. She is scheduled to have another sono in 2 weeks with a dr what does this mean?
posted on Thu, 13 Mar 2014
Twitter Mon, 5 Oct 2015 Answered on
Twitter Tue, 6 Oct 2015 Last reviewed on
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OBGYN, Maternal and Fetal Medicine,  's  Response
Hi dear, I have gone through your question and understand your concerns. Enlargement of posterior fossa of the brain in the fetus can be due to :
1. Congenital anomalies like Dandy Walker syndrome
2. Absence of cerebellar vermis
3. Posterior fossa cyst
I suggest her to consult a fetal medicine specialist to get a detailed anomaly scan to detect any other congenital anomaly in the fetus, get an amniocentesis done to determine the fetal karyotype and get further management accordingly.
Hope you found the answer helpful.
Regards
Dr Deepti Verma
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What Does Enlarged Posterior Fossa During Pregnancy Mean?

Hi dear, I have gone through your question and understand your concerns. Enlargement of posterior fossa of the brain in the fetus can be due to : 1. Congenital anomalies like Dandy Walker syndrome 2. Absence of cerebellar vermis 3. Posterior fossa cyst I suggest her to consult a fetal medicine specialist to get a detailed anomaly scan to detect any other congenital anomaly in the fetus, get an amniocentesis done to determine the fetal karyotype and get further management accordingly. Hope you found the answer helpful. Regards Dr Deepti Verma