Presentation
Visual disturbances.
Patient Data
Age: 5 years
Gender: Male
From the case:
Compressive arachnoid cyst
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A large region of CSF intensity cyst occupying majority of the right anterior and middle cranial fossa eliciting mass effect and left-sided midline shift measuring about 7 mm
No water restriction on DWI images
No solid component.
Case Discussion
MRI features are consistent with a large compressive arachnoid cyst of the right middle cranial fossa, type III according to Galassi classification of middle cranial fossa arachnoid cysts.
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