食管癌是临床常见的肿瘤疾病,目前的主要治疗方法是手术治疗[1],但由于手术创伤、患者抵抗力低下、机体营养状况较差等原因,容易发生术后肺部并发症,严重影响患者预后及生活质量,甚至危及生命[2]。食管癌术后肺部并发症主要有气胸、肺炎、胸腔积液、呼吸衰竭、脓胸、急性呼吸窘迫综合征(acute respiratory distress syndrome,ARDS)等[3]。为进一步了解引起食管癌术后肺部并发症的原因,提高患者预后及 Esophageal cancer is a common clinical tumor disease. The current main treatment method is surgical treatment [1]. However, due to surgical trauma, low patient resistance, and poor body nutritional status, postoperative pulmonary complications are prone to serious effects. The prognosis and quality of life of patients are even life-threatening [2]. Postoperative pulmonary complications of esophageal cancer include pneumothorax, pneumonia, pleural effusion, respiratory failure, empyema, and acute respiratory distress syndrome (ARDS) [3]. To further understand the causes of postoperative pulmonary complications of esophageal cancer, improve patient outcomes and