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Meningioma: left cerebellopontine angle



Patient Data

Age: 77 years
Gender: Male

A well defined large extra-axial soft tissue mass lesion seen at the left cerebello-pontine angle (CPA). It exhibits initial iso to slightly hyperdensity with moderate homogeneous enhancement after contrast injection showing central calcification.  Mild mass effect in term of effacement of the left CPA cistern and 4th ventricle with subsequent supra tentorial hydrocephalic changes.

A well defined posterior fossa mass lesion is seen occupying the left cerebellopontine region.

The mass showing a wide dural base with junction to the inferior aspect of the tentorium.

The lesion exhibits iso intense to grey matter in all pulse sequences.

It shows intense homogenous enhancement after contrast administration

This large mass is compressing the brainstem and the fourth ventricle with subsequent dilation of the third and both lateral ventricles.

Case Discussion

Meningiomas are extra-axial tumors and represent the most common tumor of the meninges


Three is no intracanalicular extension so can be differentiated from the acoustic neuroma

Also the hypointense signal in T2 WI is a a supportive for meningioma 

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Case information

rID: 54857
Published: 7th Aug 2017
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

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