Arachnoid cyst - middle cranial fossa

Case contributed by Dr Bruno Di Muzio

Presentation

Incidental finding

Patient Data

Age: 85 years
Gender: Female

CT Brain

ct

CT demonstrating a region of CSF intensity which expands the right middle cranial fossa and displaces the temporal lobe posteriorly.

Case Discussion

Arachnoid cysts are relatively common benign lesions occurring in association with the central nervous system, both within the intracranial compartment (most common) as well as within the spinal canal. They are usually located within the subarachnoid space and contain CSF. 

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