“…It would seem that a practical system of classification and staging must be l ) based on logical anatomic concepts which can be simply and easily defined, Z) adaptable to pre-treatment clinical evaluation, 3) consistent with what is already known about the clinical behavior and biologic potential of lesions in various locations, 4) capable of correlation with present treatment methods, so that a single group will not include cases in which individual clinical features have widely differing implications as to selection of treatment method (see below) and 5) as simple as consistent with the above requirements so that a) groups for reporting end results will not be too numerous and b) reports from clinics without large numbers of cases, will have statistical significance. The Task Force on Larynx has defined the anatomical limits of the larynx as follows:…”