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Trigeminal nerve schwannoma

Case contributed by Dr Kanchan Gupta
Diagnosis almost certain

Presentation

Giddiness and unsteadiness of gait.

Patient Data

Age: 30 years
Gender: Female
mri

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. It is causing compression of the brainstem and fourth ventricle.

Case Discussion

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, in keeping with trigeminal nerve schwannoma.

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