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Arachnoid cyst

Case contributed by Hani Makky Al Salam
Diagnosis almost certain

Presentation

Headache.

Patient Data

Age: 25 years
Gender: Male

Brain

ct

A large CSF attenuation lesion.

Brain

mri

A large cystic lesion that follows CSF signal on all pulse sequences representing an arachnoid cyst.

Case Discussion

Arachnoid cyst.

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