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![Radiogenomics of medulloblastoma: imaging surrogates of molecular biology](https://image.oaes.cc/4625f9fd-cba0-4b4b-8342-f407c61bf310/2864.fig.4.jpg)
Figure 4. Typical magnetic resonance imaging features of group 4 medulloblastoma. Post-contrast axial T1-weighted (A) image show a mildly enhancing tumor arising in the midline posterior fossa. Corresponding T2-weighted image (B) better delineates the extent of primary tumor. Note the mild dilatation of the superior recess of the IVth ventricle on post-contrast sagittal T1-weighted (C) image and presence of suprasellar/infundibular metastasis best appreciated on the post-contrast coronal T1-weighted (D) image