Fig. 2

Brain MRI with contrast. A Sagittal T1 reconstruction with persistence of prepontine extraaxial mass that, when compared with previous MRI, had increased in size proportionally to the rest of the head and presented with heterogeneous signal intensity due to protein and lipid component that was not previously visualized. B Sagittal T1 contrast-enhanced sagittal reconstruction. The mass does not show enhancement after medium contrast administration. C Coronal T2 heterogeneous mass predominantly hypointense; it no longer preserves CSF-like signal intensity. D Axial FLAIR section with heterogeneity in signal intensity, although predominantly hyperintense. E Axial slice on DWI showing persistence of bright mass