Oral oncology · 2018
Tumor volume as a predictor of survival in T3 glottic carcinoma: A novel approach to patient selection.
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Dziegielewski Peter T, Reschly William J, Morris Chris G, DeJesus Reordan Danny, Silver Natalie, Boyce Brian J, Santiago Inocente, Amdur Robert J, Mendenhall William M
Аннотация
BACKGROUND: The optimal treatment for T3 glottic cancers continues to be debated. Organ preservation has become the standard of care, but not all tumors respond equally. The purpose of this was to investigate the long-term survival outcomes of organ preservation protocols based on tumor volume.
METHODS: A retrospective review of prospectively collected data from 1966 to 2016 was performed. Patients with T3 vocal cord cancer treated with radiation therapy (RT) at the University of Florida were included. Local control rates as well as survival rates were determined with a Kaplan Meier and Cox regression analysis. Survival was analyzed as a function of tumor volume and an optimal cut point was determined.
RESULTS: 107/234 patients were included. 79% received RT and 21% chemo-RT. 5-year local control was 61.5% and 5-year disease specific survival was 79.3%. Tumor volume was a significant predictor of survival (p = 0.007). An optimal cut point for tumor volume was 2.5 cc. Patients with tumor volumes ≥2.5 cc had significantly worse (p < 0.05) tumor control rates (100% vs. 70.4%).
CONCLUSION: Tumor volume is a significant predictor of survival outcomes in T3 vocal cord cancers, but will need external validation. Tumors <2.5 cc have favorable outcomes. Those with higher volume tumors should be counselled appropriately and be considered for primary surgical management.
METHODS: A retrospective review of prospectively collected data from 1966 to 2016 was performed. Patients with T3 vocal cord cancer treated with radiation therapy (RT) at the University of Florida were included. Local control rates as well as survival rates were determined with a Kaplan Meier and Cox regression analysis. Survival was analyzed as a function of tumor volume and an optimal cut point was determined.
RESULTS: 107/234 patients were included. 79% received RT and 21% chemo-RT. 5-year local control was 61.5% and 5-year disease specific survival was 79.3%. Tumor volume was a significant predictor of survival (p = 0.007). An optimal cut point for tumor volume was 2.5 cc. Patients with tumor volumes ≥2.5 cc had significantly worse (p < 0.05) tumor control rates (100% vs. 70.4%).
CONCLUSION: Tumor volume is a significant predictor of survival outcomes in T3 vocal cord cancers, but will need external validation. Tumors <2.5 cc have favorable outcomes. Those with higher volume tumors should be counselled appropriately and be considered for primary surgical management.