Strengths and limitation of the study
This is a strictly pediatric series. The main limitation of this study is the small number of false positives, which weakens the analysis of this group and the comparison with true positives. The PPV found in our study is consistent to the ones described in the literature as in adults as in children (9,10). Moreover, we performed a critical analysis of our pitfalls (T1 hypersignal, size of the DW-MRI hypersignal), in order to later avoid unnecessary surgery.