title: [Causes and affecting factors of unplanned reoperations in cancer patients].
abstract: OBJECTIVE
  To investigate the causes and affecting factors of unplanned reoperations in cancer patients.
  
  
  METHODS
  All patients, who underwent surgery and unplanned surgical reoperations in Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College between November 1, 2012 and October 1, 2013, were included in this study. The causes and affecting factors of unplanned reoperations were retrospectively analyzed with logistic regression model.
  
  
  RESULTS
  A total of 16, 362 operations were performed in that period, in which 126 cases underwent unplanned reoperation. The incidence rate of unplanned reoperation was 0.77%. The top three causes for unplanned reoperation were bleeding or hematoma in 44 cases (34.92%), wound infection or split in 37 cases (29.37%), and anastomotic leak in 14 cases (11.11%). Logistic regression analysis showed that tumor classification, surgery grade and gender were independent factors for the unplanned reoperations.
  
  
  CONCLUSIONS
  The main causes of unplanned reoperation are bleeding or hematoma, wound infection or split and anastomotic leak. Tumor classification, surgery grade and gender are the independent factors for unplanned reoperations.
authors.affiliation: Department of Medical Service, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China.
authors.forename: Yibo
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Department of Medical Service, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China.
authors.forename: Jianhui
authors.initials: J
authors.lastname: Ma
authors.affiliation: Department of Medical Service, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China.
authors.forename: Yanfei
authors.initials: Y
authors.lastname: Lin
authors.affiliation: Department of Medical Service, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China.
authors.forename: Xiuhong
authors.initials: X
authors.lastname: Wu
authors.affiliation: Department of Medical Service, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China.
authors.forename: Lixia
authors.initials: L
authors.lastname: Wang
authors.affiliation: Department of Medical Service, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China. Email: aiwang8500@sina.com.
authors.forename: Ai
authors.initials: A
authors.lastname: Wang
mesh_terms: D057868:Anastomotic Leak; D006470:Hemorrhage; D006801:Humans; D016015:Logistic Models; D009369:Neoplasms; D011183:Postoperative Complications / Q000453:epidemiology*; D012086:Reoperation / Q000706:statistics & numerical data*; D012189:Retrospective Studies