Presentation
Ataxia with cranial nerve palsies.
Patient Data
The pons is diffusely enlarged with flattening of the floor of the 4th ventricle, encasing the basilar artery, and obliterating the prepontine cistern. It shows a low signal intensity on T1WI, heterogeneously increased signal on T2WI/FLAIR with a dorsal area of a low signal on FLAIR sequence. On postcontrast sequences, there is a focal area with irregular heterogeneous enhancement within the dorsal portion of the tumor. Mild dilatation of the 3rd and lateral ventricle (mild obstructive hydrocephalus).
Case Discussion
MRI features suggestive of a diffuse pontine glioma