We used 2 measures for classification of SVZ contact; a dichotomous method according to Rhoton’s classification of the SVZ,40 and measurement from the centroid of the tumor as performed by Steed et al.50 Since none of the stem cell markers or the proliferation marker Ki67 were associated with the distance to the SVZ, we cannot draw any other conclusion from our analysis than that tumor size rather than tumor phenotype affects the likelihood of being in contact with the SVZ. Here, MKI67 is linked to neoplasm.