Fig. 2.

(A) Nine-year-old female who presented with a Group 4 medulloblastoma and subsequently developed CMS. Postoperative MRI shows mild T2 signal abnormality and subtle irregular contour of the superior cerebellar peduncles (SCPs) (arrows). (B) Corresponding color-encoded fractional anisotropy (FA) map of diffusion tensor MRI shows attenuated directionality of the SCPs (arrows). (C) Color FA map of a 9-year-old boy who presented with a Group 3 medulloblastoma and did not develop CMS. The SCP projections appear intact (arrows) with more robust color-encoded directionality compared with B. (D) Color FA map of a 21-month-old boy who presented with an SHH medulloblastoma and did not develop CMS. The SCP projections are slightly displaced, but the color-encoded directionality is overall preserved (arrows) compared with B.