Arachnoid cyst - middle cranial fossa

Case contributed by Assoc Prof Frank Gaillard

Patient Data

Age: Young adult

A region of CSF intensity which expands the middle cranial fossa and displaces the temporal lobe posteriorly. There is no restricted diffusion, no solid component and no enhancement. Features are characteristic of an arachnoid cyst

Case Discussion

This arachnoid cyst would fall into the type 2 Galassi classification (not that anyone uses it in practice).

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