Presentation
Chronic headache. Incidental finding.
Patient Data
Age: 30 years
Gender: Male
From the case:
Arachnoid cyst - cerebellopontine angle
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Small extra-axial cystic lesion at the right cerebellopontine angle (CPA) of CSF signal on all sequences with no restricted diffusion on DWI / ADC.
Case Discussion
The MRI finding is most consistent with an arachnoid cyst of the cerebellopontine angle (incidental finding in this case).
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