Konuthula N, et al. – The authors used the National Cancer Database (NCDB) in order to evaluate the utility of the Kadish staging system in esthesioneuroblastoma. Investigations revealed that Kadish B had greater survival than Kadish A, but the treatment characteristics could not account for this difference. In this study, the utility of early–stage Kadish staging remains uncertain. Hence, further research work was required to determine its efficacy.