title: [Postoperative 30-day mortality may underestimate the risk of esophagectomy].
abstract: OBJECTIVE
  To summarize the mortality of esophagectomy in our series and compare the different mortalities based on 30-day deaths and 90-day deaths postoperatively.
  
  
  METHODS
  A total of 954 patients undergoing esophagectomy by single-surgeon-team between January 2000 and December 2012 from our prospective database were enrolled. The mortalities based on 30-day and 90-day deaths postoperatively were compared, and the causes of deaths within 30 days and 90 days were analyzed.
  
  
  RESULTS
  Among all these 954 patients, a total of 20 postoperative deaths(2.1%) were observed: 11 within 30 days(1.1%) and 9 between 30 and 90 days after surgery(1.0%). The reasons for deaths within 30 days were as follows: 3 for respiratory failure related to anastomotic leakage,1 for bleeding after stenting due to anastomotic fistula, 1 for sepsis, 3 for respiratory failure from presenting preoperative respiratory morbidities, 2 for cardiac arrest caused by preoperative heart disorder, and 1 for multiple organ failure caused by early adjuvant chemotoxicity. The reasons for deaths between 30 and 90 days were as follows: 1 for respiratory failure related to anastomotic leakage, 1 for cardiac arrest from preoperative heart disorder, 1 for cerebrovascular accident, 1 for liver failure from liver cirrhosis presenting preoperatively, 1 for renal failure after operation, 1 for tumor progression and 2 for unknown reasons.
  
  
  CONCLUSIONS
  Since postoperative mortality calculated based on 30 days deaths postoperatively may underestimate the risk of esophagectomy, mortality calculated based on 90 days may be a better option.
authors.affiliation: Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department One of Thoracic Surgery, Peking University Cancer Hospital and Institute, Peking University School of Oncology, Beijing 100142, China. chenkeneng@bjmu.com.cn.
authors.forename: Chuan
authors.initials: C
authors.lastname: Huang
authors.forename: Yongbo
authors.initials: Y
authors.lastname: Yang
authors.forename: Wanpu
authors.initials: W
authors.lastname: Yan
authors.forename: Liang
authors.initials: L
authors.lastname: Dai
authors.forename: Xiaozheng
authors.initials: X
authors.lastname: Kang
authors.forename: Keneng
authors.initials: K
authors.lastname: Chen
mesh_terms: D057868:Anastomotic Leak; D002423:Cause of Death; D004938:Esophageal Neoplasms / Q000601:surgery*; D016629:Esophagectomy / Q000401:mortality*; D006801:Humans; D011184:Postoperative Period; D011446:Prospective Studies; D012307:Risk Factors; D015607:Stents