title: Occupational lung cancer surveillance in South Korea, 2006-2009.
abstract: OBJECTIVE
  The lung cancer mortality in Korea has increased remarkably during the last 20 years, and has been the first leading cause of cancer-related deaths since 2000. The aim of the current study was to examine the time trends of occupational lung cancer and carcinogens exposure during the period 2006-2009 in South Korea, by assessing the proportion of occupational burden.
  
  
  METHODS
  We defined occupational lung cancer for surveillance, and developed a reporting protocol and reporting website for the surveillance of occupational lung cancer. The study patients were chosen from 9 participating university hospitals in the following 7 areas: Seoul, Incheon, Wonju, Daejeon, Daegu, Busan, and Gwangju.
  
  
  RESULTS
  The combined proportion of definite and probable occupational lung cancer among all lung cancers investigated in this study was 10.0%, 8.6%, 10.7%, and 15.8% in the years 2006 to 2009, respectively, with an average of 11.7% over the four-year study period. The main carcinogens were asbestos, crystalline silica, radon, polyaromatic hydrocarbons (PAHs), diesel exhaust particles, chromium, and nickel.
  
  
  CONCLUSIONS
  We estimated that about 11.7% of the incident lung cancer was preventable. This reveals the potential to considerably reduce lung cancer by intervention in occupational fields.
authors.affiliation: Department of Occupational and Environment Medicine, Inha University Hospital, Incheon, Korea.
authors.forename: Jong-Han
authors.initials: JH
authors.lastname: Leem
authors.forename: Hwan-Cheol
authors.initials: HC
authors.lastname: Kim
authors.forename: Jeong-Seon
authors.initials: JS
authors.lastname: Ryu
authors.forename: Jong Uk
authors.initials: JU
authors.lastname: Won
authors.forename: Jai Dong
authors.initials: JD
authors.lastname: Moon
authors.forename: Young-Chul
authors.initials: YC
authors.lastname: Kim
authors.forename: Sang Baek
authors.initials: SB
authors.lastname: Koh
authors.forename: Suk Joong
authors.initials: SJ
authors.lastname: Yong
authors.forename: Soo Geun
authors.initials: SG
authors.lastname: Kim
authors.forename: Jae Yong
authors.initials: JY
authors.lastname: Park
authors.forename: Inah
authors.initials: I
authors.lastname: Kim
authors.forename: Jung Il
authors.initials: JI
authors.lastname: Kim
authors.forename: Jung Won
authors.initials: JW
authors.lastname: Kim
authors.forename: Eui-Cheol
authors.initials: EC
authors.lastname: Lee
authors.forename: Hyoung-Ryoul
authors.initials: HR
authors.lastname: Kim
authors.forename: Dae-Hwan
authors.initials: DH
authors.lastname: Kim
authors.forename: Dong Mug
authors.initials: DM
authors.lastname: Kang
authors.forename: Yun-Chul
authors.initials: YC
authors.lastname: Hong