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VOLUME 11 , ISSUE 4 ( October-December, 2020 ) > List of Articles
Vikas Mehta, Trisha Thompson, Runhua Shi
Citation Information : Mehta V, Thompson T, Shi R. Predictors of Survival in Early-stage Laryngeal Cancer by Treatment Modality. Int J Head Neck Surg 2020; 11 (4):63-70.
License: CC BY-NC 4.0
Published Online: 08-12-2020
Copyright Statement: Copyright © 2020; Jaypee Brothers Medical Publishers (P) Ltd.
Aim and objective: Our investigation attempts to identify factors associated with improved survival for early-stage laryngeal cancer based on primary therapy using the National Cancer Database (NCDB). Materials and methods: This is a retrospective cohort with data abstracted from the NCDB. Patients with T1 or T2N0M0 laryngeal cancer from 1998 to 2011 who received radiation only, laser surgery, or laser surgery with adjuvant radiation were included. The Chi-square analysis were used to assess the association between treatment and factors investigated. Overall survival was assessed via the Kaplan-Meier method. Log-rank methods were used to determine factors significant for survival, and a multivariable Cox regression model was performed. Results: There were 14,276 patients from the NCDB eligible for this study. The majority (91.2%) of patients received primary radiation, 4.7% laser resection, and 4.0% laser resection with radiation. Five-year survival for laser surgery was 78.8% (95% CI 75.5–82.1) vs 67.2% (95% CI 66.4–68.1%) for radiation alone. The multivariate analysis demonstrated advanced age, increased comorbidities, public or uninsured, T2 stage, and supraglottic subsite to be independently associated with worse survival. Treatment with laser only and laser with adjuvant radiation demonstrated a hazard ratio of 0.77 (p = 0.055) and 0.65 (p = 0.001) when compared to primary radiation. Conclusion and clinical significance: Survival analysis on early-stage glottic patients in the NCDB showed multiple factors to be independently associated with survival. Outcomes based on treatment suggest an improved survival when utilizing endoscopic surgery as the primary treatment modality.
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