title: Status and perspectives of detection by low-dose computed tomography or computed radiography in surgical patients with lung cancer, based on a five-year study.
abstract: BACKGROUND
  A retrospective study involving 502 lung cancer patients who had received pulmonary resection from 2009-2013 was conducted in order to compare the clinical characteristics of patients whose diagnosis was detected by low-dose computed tomography (LDCT) and computed radiography (CR).
  
  
  METHODS
  Two groups were established, based on the method of detection: the LDCT group included 172 lung cancer patients; the CR group included 330 lung cancer patients. The evolution of proportions of patients in urban and rural regions was also analyzed, according to detection method.
  
  
  RESULTS
  The percentage of patients with stage I was higher in the LDCT group than in the CR group (77.3%, 133/172 vs. 53.6%, 177/330). The incidence of postoperative complications within 30 days was significantly lower in the LDCT than in CR group (25.0% vs. 33.6%). The proportion of patients detected by LDCT or CR in urban regions was constantly higher than in rural regions (with an increase of 13.0% vs. 5.9%); the proportion of LDCT-detected patients in urban regions was constantly higher than in rural regions (with an increase of 8.7% vs. 5.9%).
  
  
  CONCLUSIONS
  LDCT contributes to a higher proportion of early lung cancer diagnoses and a lower incidence of postoperative complications in surgical patients. The proportions of patients detected early and by LDCT have both increased steadily during the last five years. These two trends are more pronounced in urban compared with rural patients.
authors.affiliation: Department of Thoracic Surgery West China Hospital Sichuan University Chengdu China.
authors.forename: Yutian
authors.initials: Y
authors.lastname: Lai
authors.affiliation: Department of Thoracic Surgery West China Hospital Sichuan University Chengdu China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Shen
authors.affiliation: Department of Thoracic Surgery West China Hospital Sichuan University Chengdu China.
authors.forename: Xin
authors.initials: X
authors.lastname: Wang
authors.affiliation: Department of Thoracic Surgery West China Hospital Sichuan University Chengdu China.
authors.forename: Heng
authors.initials: H
authors.lastname: Du
authors.affiliation: Department of Thoracic Surgery West China Hospital Sichuan University Chengdu China.
authors.forename: Dali
authors.initials: D
authors.lastname: Chen
authors.affiliation: Department of Thoracic Surgery West China Hospital Sichuan University Chengdu China.
authors.forename: Long
authors.initials: L
authors.lastname: Tian
authors.affiliation: Department of Thoracic Surgery West China Hospital Sichuan University Chengdu China.
authors.forename: Xudong
authors.initials: X
authors.lastname: Zhou
authors.affiliation: Department of Thoracic Surgery West China Hospital Sichuan University Chengdu China.
authors.forename: Guowei
authors.initials: G
authors.lastname: Che
keywords: Computed radiography; low‐dose computed tomography; lung cancer; rural patients; urban patients
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