Figure 1

Figure 1

Brain MRI demonstrates superficial, nodular, non-enhancing lesions of the cerebellum and pons caused by leptomeningeal glioma infiltration. (A) Axial T2 weighted image shows hyperintense nodular lesions on the cerebellar surface (arrows). (B) Sagittal T2 weighted image demonstrates superficial location of cerebellar (arrows) and pontine (arrow head) lesions. (C) Postcontrast axial T1 weighted image discloses hypointense lesions (arrows) that do not show gadolinium enhancement. The contrast enhancement on the surface of the brainstem can be attributed to blood vessels. Adjacent slices as well as follow up MRI examinations showed no leptomeningeal enhancement.