title: The dark side of the moon: impact of moon phases on long-term survival, mortality and morbidity of surgery for lung cancer.
abstract: OBJECTIVE
  Superstition is common and causes discomfiture or fear, especially in patients who have to undergo surgery for cancer. One superstition is, that moon phases influence surgical outcome. This study was performed to analyse lunar impact on the outcome following lung cancer surgery.
  
  
  METHODS
  2411 patients underwent pulmonary resection for lung cancer in the past 30 years at our institution. Intra- and postoperative complications as well as long-term follow-up data were entered in our lung-cancer database. Factors influencing mortality, morbidity and survival were analyzed.
  
  
  RESULTS
  Rate of intra-operative complications as well as rate of post-operative morbidity and mortality was not significantly affected by moon phases. Furthermore, there was no significant impact of the lunar cycle on long-term survival.
  
  
  CONCLUSIONS
  In this study there was no evidence that outcome of surgery for lung cancer is affected by the moon. These results may help the physician to quiet the mind of patients who are somewhat afraid of wrong timing of surgery with respect to the moon phases. However, patients who strongly believe in the impact of moon phase should be taken seriously and correct timing of operations should be conceded to them as long as key-date scheduling doesn't constrict evidence based treatment regimens.
authors.affiliation: Department of Surgery, Klinikum Grosshadern, Ludwig-Maximilians-University, Munich, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Kuehnl
authors.forename: M
authors.initials: M
authors.lastname: Herzog
authors.forename: M
authors.initials: M
authors.lastname: Schmidt
authors.forename: H-M
authors.initials: HM
authors.lastname: Hornung
authors.forename: K-W
authors.initials: KW
authors.lastname: Jauch
authors.forename: R A
authors.initials: RA
authors.lastname: Hatz
authors.forename: C
authors.initials: C
authors.lastname: Graeb
mesh_terms: D005260:Female; D005495:Folklore; D005858:Germany / Q000453:epidemiology; D006801:Humans; D007431:Intraoperative Complications; D008175:Lung Neoplasms / Q000175:diagnosis / Q000401:mortality*; D008297:Male; D008875:Middle Aged; D016081:Moon; D009367:Neoplasm Staging; D011183:Postoperative Complications; D012189:Retrospective Studies; D015996:Survival Rate