Definitive Radiotherapy for Older Patients Aged ≥75 Years With Localized Esophageal Cancer

Background/Aim: To evaluate the predictive factors in older patients with localized esophageal cancer treated with definitive radiotherapy. Patients and Methods: We retrospectively analyzed patients aged ≥75 years who were treated with three-dimensional conformal radiotherapy between 2008 and 2017. The patients were classified into the oldest-old group (≥80 years) and the old group (75-79 years). Results: Fifty patients were identified, 28 in...