Axial (above left), sagittal (above middle) and coronal (above right) T1 MRI with contrast of the brain shows a heterogeneously enhancing mass centered in the fourth ventricle which extends into the right cerebellar hemisphere. Axial T2 MRI (below left) shows the mass to be solid and on diffusion weighted imaging (below right) the mass demonstrates diffusion restriction.
Pediatric Imaging 