Presentation
MRI suggested following a cervical spine MRI to assess the cerebellar tonsils.
Patient Data
Age: 25 years
Gender: Female
From the case:
Arachnoid cyst - cerebellopontine angle
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2.3 cm cystic lesion at the right cerebellopontine angle following CSF signal on all sequences.
No solid elements. No mass effect on the pons.
The remainder of the intracranial appearances are normal.
Case Discussion
Arachnoid cysts are a not infrequent incidental observation on brain imaging.
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