Trigeminal nerve schwannoma
Giddiness and unsteadiness of gait.
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There is a well defined, extra-axial, lobulated, heterogenous left cerebellopontine angle lesion which is predominantly isointense to hypointense on T1W image and hyperintense on T2 W images. The lesion is showing prominent heterogenous enhancement on contrast administration. The lesion is seen in the course of the left trigeminal nerve that is from the origin at the pons extending into the Meckel’s cave. It is causing compression of the brainstem and fourth ventricle.
- Anne Osborn : Diagnostic Neuroradiology