- Current diagnosis of histological or cytopathological HNSCC malignancy borderline resectable stage III up to stage IVb (T1-4, N0-2, M0) or unresectable stage IV with high nodal status defined as >= N2b (by the American Joint Committee on Cancer [AJCC] 7th Edition Staging) that is amenable or appropriate for curative treatment; borderline resectability is assessed; NOTE: surgical unresectability will be defined as the combination of the treating surgeon's judgment of unresectability plus one of the following objective criteria: