Figure legends
Figure 1. Brain MRI in cases 1-4. T2-wi (A,B), ADC (C), T1-wi
after contrast medium (D) showing tumors in the posterior fossa located
in the fourth ventricle. In cases 1-3, the masses appear to be gross
midline, with no definite laterality. Note involvement of the left (case
1) and right (case 2) postero-lateral recesses of the fourth ventricle
in subtype B (arrows), and of the right antero-lateral recess of the
fourth ventricle in subtype A (arrowheads in case 3). In case 4, the
tumor is midline, with no obvious laterality. Subtype A is the most
central of all WNT medulloblastomas (ref Patay Z et al 2015). All tumors
show similar signal abnormalities and enhancement patterns.
Figure 2. Survival free of other oncological events