Time to initiation of postoperative radiotherapy as a prognostic factor in patients with advanced laryngeal cancer

Main Article Content

Pilar Contreras R.
Daniel Muñoz S.
José Contreras R.
Maritza Rahal E.

Keywords

Squamous laryngeal cancer, postoperative radiotherapy, time to initiation of radiotherapy, delay, survival

Abstract

Introduction: Among the factors that play a role in the survival and recurrence of disease of patients with operated squamous laryngeal cancer is the time to initiation of postoperative radiotherapy (RT). Aim: To determine the impact of delayed onset of postoperative RT on survival and disease recurrence in patients with advanced operated squamous laryngeal cancer. Material and Method: Retrospective cohort study. Collection of data through review of clinical records. Analysis of survival and disease recurrence using the Kaplan-Meier method, comparison of curves with Log-Rank test and Cox regression model for analy- sis of prognostic factors. Results: The waiting time between surgery and the initiation of RT in our hospital realities was 11 weeks. The 5-year specific survival in patients who start RT < 6 weeks after surgery is 33.3% and decreases to 20% in those who start > 6 weeks (p = 0.20). Conclusion: Patients who start RT in more than 6 weeks after surgery do not present a statistically significant difference in prognosis.

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