fig3

Figure 3. Magnetic resonance imaging of the brain: (A) sagittal T1-weighted (T1-W) sequence showing hyperintense mass over quadrigeminal plate; (B) axial T2-W sequence with hyperintense mass; (C) axial T1-W sequence with contrast showing no contrast enhancement of the lesion; (D) axial DWI sequence showing no restriction of diffusion by the mass. DWI: diffusion weighted image