Describe some clinical and paraclinical characteristics and evaluate the results of radiaotherapy by 3D-CRT and VMAT techniques in patients with concurrent chemoradiotherapy with esophageal cancer at K hospital. Subjects ad methods: A retrospective and prospective descriptive study on 60 patients undergoing concurrent chemoradiotherapy for esophageal cancer with 3D-CRT and VMAT techniques at K hospital from May 2018 to May 2021.