Arachnoid cyst

Case contributed by The Radswiki
Diagnosis almost certain

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

ct

Iso- to hypodense homogeneous extra-axial cystic lesion at right temporal region extending to Sylvian fissure with scalloping of the overlying inner table of the skull.

mri

Right temporal cystic lesion extending to Sylvian fissure with homogeneous high signal on T1, low signal on T2, incomplete suppression on FLAIR and no post-contrast enhancement. Scalloping of overlying outer table of the skull is noted.

Case Discussion

CT and MR images demonstrate a hemorrhagic arachnoid cyst.

This case was donated to Radiopaedia.org by Radswiki.net

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