title: [The effectiveness of preoperative steroid therapy in preventing postoperative circulatory system complications in surgery of esophageal cancer].
mesh_terms: D002318:Cardiovascular Diseases / Q000517:prevention & control*; D004938:Esophageal Neoplasms / Q000601:surgery*; D006801:Humans; D008775:Methylprednisolone / Q000627:therapeutic use*; D011183:Postoperative Complications / Q000517:prevention & control*; D011292:Premedication
chemical_list: D008775:Methylprednisolone