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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Blocked Aqueduct, Arachnoid Cyst Posterior To Tectal Plate. ETV Appropriate?

Hello neuro guys... I have an endoscopic third ventriculostomy planned soon, since a MRI and CSF Flow study have shown a moderately blocked aqueduct and little to no flow out of the third ventricle , and none out of the 4th. I have an arachnoid cyst next to (posterior) to the tectal plate but it is unclear if the AC is responsible for the narrowing of the aqueduct. My surgeon says the ETV is most appropriate at this time. Symptoms include pain/pressure, trouble focusing/memory/thought, gait/heavy weight feeling, burning behind the eyes.. Is leaving the AC alone a standard approach (size is 2.1 CM) ?
posted on Tue, 8 May 2012
Twitter Tue, 8 May 2012 Answered on
Twitter Wed, 9 May 2012 Last reviewed on
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Cardiologist,  's  Response
Hi! Thanks for a good question!
Although the arachnoid cyst is not directly responsible for narrowing of the aqueduct, it is responsible for the symptoms, which are attributed to raised ICP (Intracranial pressure) due to the SOL (Space occupying lesion).
So, as has been advised by your surgeon, the choice of endoscopic third ventriculostomy- ETV would be the most appropriate management, although the arachnoid cyst is smaller in size.
Thanks again & wishing you the best possible treatment & early recovery!
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Blocked Aqueduct, Arachnoid Cyst Posterior To Tectal Plate. ETV Appropriate?

Hi! Thanks for a good question! Although the arachnoid cyst is not directly responsible for narrowing of the aqueduct, it is responsible for the symptoms, which are attributed to raised ICP (Intracranial pressure) due to the SOL (Space occupying lesion). So, as has been advised by your surgeon, the choice of endoscopic third ventriculostomy- ETV would be the most appropriate management, although the arachnoid cyst is smaller in size. Thanks again & wishing you the best possible treatment & early recovery!