Tuesday, 7 February 2012

Giant Cisterna Magna


Syn: Mega Cisterna Magna.
Cisterna magna is a normal retro cerebellar Csf density space, when unusually prominent termed as Giant Cisterna magna.
A subarachnoid septa / dural fold is usually seen within the cistern.
A normal anatomical variation of no clinical significance as there are no associated Vermian or cerebellar anomalies.
Normal Vermis. Normal fourth ventricle or communication with fourth ventricle differentiate it from Dandy Walker malformation spectrum.
No mass effect. No associated Ventriculomegaly.
Sometimes may be so large that it extends laterally and superiorly far beyond the normal anatomic limits of the cisterna magna with an associated cerebellar hypoplasia.
The tentorium cerebelli are normally located.
An associated scalloping of occipital bone, postulated to be due to Csf pulsations.
On MRI, iso intense to Csf on all pulse sequences. No restricted diffusion on Dw images.

3 comments:

Dr Mohit Agarwal said...

differential diagnosis---arachnoid cyst, epidermoid cyst

Parker said...

Hello Sir,
Exactly I am suffering with this problem(as shown in image in the post), is it very serious. Memory loss severe headaches any other things, . Sir is there any cure for this thing. If any thing is there will you please send me any advice to me at rammanoharbb@gmail.com

please sir
Thanking you sir
Ram

Parker said...

Hello Sir,
Exactly I am suffering with this problem(as shown in image in the post), is it very serious. Memory loss severe headaches any other things, . Sir is there any cure for this thing. If any thing is there will you please send me any advice to me at rammanoharbb@gmail.com

please sir
Thanking you sir
Ram