Fig 3.
Brain imaging of patient 3. Sagittal plane (A–C) MR images show a large midline vermian tumor, with mass effect on the fourth ventricle causing hydrocephalus. The tumor displays hypointensity on the T1-weighted image (A), hyperintensity on the T2-weighted image (C), and no enhancement after contrast media injection (B). Diffusion signal is high (D) with low ADC.