Axial T2 and FLAIR images show a hyperintense mass extending from the pons to the right
cerebellum. The mass expands the pons and right middle cerebellar peduncle, and deforms
the fourth ventricle. A basilar flow void is present.
Left: Axial T1 weighted image shows the mass with predominately low T1 signal.
Right: Sagittal and axial post-contrast T1 images show rim contrast enhancement of the
mass with irregular internal margins and is relatively little central enhancement.
Key words: mri tumor neoplasia brainstem
Brain stem glioma