fig2

Figure 2. Typical magnetic resonance imaging features of sonic hedge hog-subgroup medulloblastoma. Post-contrast axial T1-weighted (A) and corresponding T2-weighted (B) images show the tumor to be located peripherally in the left cerebellar hemisphere reaching the surface. The tumor extends superiorly to abut the tentorium on post-contrast coronal T1-weighted (C) and corresponding T2-weighted (D) images. Note the presence of intra-tumoral cysts and moderate peri-tumoral edema