Aortoesophageal Fistula Occurring During Lung Cancer Treatment: A Case Treated by Thoracic Endovascular Aortic Repair

: A 63-year-old man had received chemoradiotherapy 7 years ago for stage IIIA pulmonary adenocarcinoma of the left lower lobe and stereotactic irradiation 3 years ago for stage IA pulmonary squamous cell carcinoma of the left upper lobe. An esophageal stent was placed because of esophageal narrowing caused by tumor invasion. Five months later, he was diagnosed with an aortoesophageal fistula. Because invasive surgery posed challenges, thoracic endovascular aortic repair (TEVAR) was performed. We report this rare case of aortoesophageal fistula treated using TEVAR. However, the therapeutic effect was temporary. Further studies investigating the indications for TEVAR are warranted.