Meningioma of the cerebellopontine angle

Case contributed by Ammar Haouimi
Diagnosis almost certain

Presentation

Chronic headaches and left hearing loss.

Patient Data

Age: 70 years
Gender: Female
This study is a stack
Axial
T1
This study is a stack
Axial
FLAIR
This study is a stack
Coronal
T2
This study is a stack
Axial T1
C+ fat sat
This study is a stack
Coronal T1
C+ fat sat
This study is a stack
Axial
T1 C+
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Info

There is a well-defined extra-axial dural-based mass of the left cerebellopontine angle, enlarging the porus acusticus with extension into the internal auditory canal. It displays an isosignal to the cortical grey matter on T1WI / T2WI with an avid homogeneous enhancement on postcontrast sequences with a dural tail sign. A mass effect is noted on the brainstem and middle cerebellar peduncle as well as the VII / VIII nerve roots.

Axial T1 post-contrast images also demonstrate herringbone artefact.  

Case Discussion

MRI features of a meningioma of the left cerebellopontine angle extending into the ipsilateral internal auditory canal.

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