Axial T2WI's show a moderate-sized area of CSF-like signal in the right
cerebellopontine angle cistern with some mass effect on the pons and cerebellum.
Left & middle: The area of concern is hypointense (also CSF-like) on T1WI.
Right: Diffusion weighted image shows the area is relatively hypointense
to brain but slightly hyperintense to CSF.
Key words: mri dwi tumor neoplasia
Arachnoid cyst in the
cerebellopontine angle cistern