Impact of Nonadherence to NCCN Adjuvant Radiotherapy Initiation Guidelines in Head and Neck Squamous Cell Carcinoma in an Underserved Urban Population

Background: Nonadherence to NCCN Guidelines during time from surgery to postoperative radiotherapy (S-PORT) can alter survival outcomes in head and neck squamous cell carcinomna (HNSCC). There is a need to validate this impact in an underserved urban population and to understand risk factors and reasons for delay. We sought to investigate the impact of delayed PORT with outcomes of overall survival (OS) in HNSCC, to analyze predictive factors of...