Arachnoid cyst distorting the third ventricle

Case contributed by Sandeep Bhuta
Diagnosis certain

Patient Data

Age: Adult

Note: This case has been tagged as "legacy" as it no longer meets image preparation and/or other case publication guidelines.

The MR appearance suggests a suprasellar arachnoid cyst displacing the chiasm and infundibulum anteriorly.

Case Discussion

Hydrocephalus was secondary to an obstructive third ventricle cyst. VP shunt tube in situ.

The MR appearance suggests a suprasellar arachnoid cyst displacing the chiasm and infundibulum anteriorly however on endoscopy the arachnoid cyst was (apparently) actually intraventricular in location, within the third ventricle. 

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