Sobrevida por cancer de laringe em pacientes tratados no Sistema Unico de Saude--SUS, 2002-2010/Survival rate of laryngeal cancer patients treated in Brazil's Unified Health System--SUS, 2002-2010

The scope of this article was to analyze the five-year survival rate among patients with laryngeal cancer treated in the Unified Health System in Brazil and its regions between January 2002 and June 2010. There is still scarce information in Brazil regarding the scale and survival rate of laryngeal cancer patients, which makes it difficult to adopt specific strategies for the control of the condition in the country. A retrospective cohort study based on the National Oncology Database was conducted, and the survival probability rate for laryngeal cancer according to age, sex and Brazilian regions/states was estimated using the Kaplan-Meier method. The log-rank test was used to assess the differences observed, considering a 5% significance level. Survival in Brazil was estimated at 50.8% (95%CI: 49.9%-51.8%), being lower among male patients (49.1%; 95%CI: 48.10%-50.16%); between 50 and 60 years of age (48.4%; 95%CI: 46.7%-50.0%); for residents of the Northern region (45.5%; 95%CI: 39.5%-51.3%). The regional variation in the survival rate for laryngeal cancer in Brazil reveals disparities between Brazilian regions/states that may be linked to inequality of access to diagnosis and/or treatment.