Arachnoid cyst - cerebellopontine angle

Case contributed by Ammar Haouimi
Diagnosis almost certain

Presentation

Vertigo.

Patient Data

Age: 30 years
Gender: Male
This study is a stack
Sagittal
T1
This study is a stack
Coronal
T2
This study is a stack
Axial
FLAIR
This study is a stack
Axial
Gradient Echo
This study is a stack
Axial
DWI
This study is a stack
Axial
ADC
This study is a stack
Axial
FIESTA
This study is a stack
Axial
T1 C+
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Info

Small extra-axial cystic lesion at the left cerebellopontine angle (CPA) of CSF signal on all sequences with no restricted diffusion, displacing the facial/vestibulocochlear nerves in keeping with an arachnoid cyst.

Normal appearance of the cerebellum and cerebral hemispheres.

Case Discussion

MRI features of an arachnoid cyst of the left cerebellopontine angle displacing the facial/vestibulocochlear nerves.

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