Over 50% of patients with HNSCC who undergo surgery and PORT receive care that does not adhere to National Comprehensive Cancer Network guidelines with regard to initiating PORT within 6 weeks of surgery. Sociodemographic, oncologic, treatment, and hospital factors are all associated with failure to receive guideline-directed care and should be explored in future studies. Cancer 2017;123:2651-60. © 2017 American Cancer Society.

Preoperative lymphoscintigraphy and meticulous intraoperative search for blue/radioactive nodes may improve results in H&N melanomas.

Background Determine the effect of National Comprehensive Cancer Network Guideline- adherent initiation of postoperative radiation therapy (PORT), and different time to PORT intervals, on overall survival (OS) in patients with head and neck squamous cell carcinoma (HNSCC). Methods Reviewing the National Cancer Database (NCDB) from 2006–2014, patients with HNSCC undergoing surgery and PORT were identified. Kaplan-Meier survival estimates, Cox regression analysis, and propensity score matching were used to determine the effect of initiating PORT ≤ 6 weeks of surgery, and different time to PORT intervals, on survival. Results 41,291 patients were included in the study. After adjusting for covariates, starting PORT > 6 weeks postoperatively was associated with decreased OS (adjusted Hazard Ratio [aHR] 1.13; 99% confidence interval [CI] 1.08–1.19). This finding remained in the propensity score-matched subset (HR 1.21; 99% CI 1.15–1.28). Relative to starting PORT 5 to ≤ 6 weeks postoperatively, initiating PORT earlier was not associated with improved survival (≤ 4 weeks: aHR 0.93; 99% CI 0.85–1.02, 4 to ≤ 5 weeks: aHR 0.92; 99% CI 0.84–1.01). Increasing duration of delays beyond 7 weeks were associated with progressive small survival decrements (aHR 1.09, 1.10, and 1.12 for 7 to ≤ 8 weeks, 8 to ≤ 10 weeks, and > 10 weeks). Conclusions Non-adherence to NCCN Guidelines for initiating PORT within 6 weeks of surgery is associated with decreased survival. There is no survival benefit to initiating PORT earlier within the recommended 6-week timeframe. Increasing durations of delays beyond 7 weeks are associated with small progressive survival decrements.

Because independent markers of aggressive disease appear to be unique in HN-MCC, it is important that future studies provide separate consideration for HN-MCC to allow for the most accurate identification of prognostic indicators and assessment of treatment outcomes accordingly.