ANOVA including as dependent variables the Wechsler scales sub-tests scores, showed significant group differences in the Block Design test, Digit Span test, Symbol Search test; post-hoc tests for Block Design confirmed weaker performances in both groups of NF1 with tumors compared to NF1 without tumors, while for the other sub-tests Bonferroni post-hoc revealed significantly weaker performances for the NF1 + CT group compared to NF1 (Table 1). Here, NF1 is linked to neurofibromatosis type 1.