An 80-year-old man presented to our hospital with anorexia. An esophagogastroduodenoscopy revealed a type 1 tumor occupying the esophagus and a diagnosis of esophageal carcinosarcoma was made. A palliative irradiation was planned, but as tumor invasion into the thoracic aorta was suspected on enhanced computed tomography, a thoracic endovascular aortic repair (TEVAR) was performed to prevent aorto-esophageal fistula (AEF). AEF has been reported to occur in 14.6% of patients during and after chemoradiotherapy for esophageal cancer invading the aorta and is fatal. This case suggests that prophylactic TEVAR and radiotherapy may improve the quality of life of patients with esophageal carcinosarcoma invading the aorta.
