Neutrophil/lymphocyte index ratio as a prognostic factor for overall survival in patients with triple negative breast cancer Clinical Stage III in the oncology service of the Guillermo Almenara Irigoyen National Hospital, July 2011 – July 2016


Breast cancer is a public health problem and is the leading cause of cancer incidence and mortality in adult women in Latin America and worldwide (1). According to data from the World Health Organization (WHO), each year there are 1.38 million new cases and 458,000 deaths from breast cancer (2) Breast cancer is the most common worldwide and its incidence has increased due to increased life expectancy and changes in lifestyles. (3).