Keywords esophageal neoplasms;lymph node excision;myocardium;biological markers;troporin;creatine kinase;isoenzymes;intraoperative period;

• 食管肿瘤;淋巴结切除术;心肌;生物学标记;肌钙蛋白;肌酸激酶;同工酶;手术时间;