RT Journal Article SR Electronic T1 Residential radon exposure and risk of lung cancer in never smoking women JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP P2734 VO 44 IS Suppl 58 A1 María Torres Duran A1 Alberto Ruano Ravina A1 Isaura Parente Lamelas A1 Virginia Leiro Fernandez A1 José Abal Arca A1 Carmen Montero Martinez A1 Carolina Pena ALvarez A1 Javier Gonzalez Barcala A1 Olalla Castro Añon A1 Antonio Golpe Gomez A1 Cristina Martínez A1 Maria Jose Mejuto Martí A1 Alberto Fernandez Villar A1 Juan Miguel Barros Dios YR 2014 UL http://erj.ersjournals.com/content/44/Suppl_58/P2734.abstract AB Lung cancer in never smokers (LCINS) is a growing health problem. The WHO estimates that 25% of lung cancer worldwide occurs in never smokers (10-15% in Western countries). LCINS is the 7th largest cause of cancer-related mortality in the world. There is a predominance of women among never smoking lung cancer patients. The most important LCINS risk factor is residential radon exposure. We designed a multicentric hospital-based case-control study to assess the relationship between lung cancer risk and residential radon exposure in never smokers in Galicia (Spain), a radon prone area. Eight hospitals took part in the study. We included 352 never smoking women (140 cases of primary lung cancer and 212 controls). All participants fulfilled the WHO definition of never smoker (<100 cigarettes in lifetime or <1cig/day during 6 moths) and all of them were interviewed by trained personnel with a standardized questionnaire. A radon detector (alpha-track) was placed for 3 months in the participant dwelling. Median age of participant women was 70.5 (interquartilic range: 63-78). Results were analyzed through logistic regression and they are expressed as OR and adjusted by age and environmental tobacco exposure.View this table:Residential radon exposure and risk of lung cancerThese results suggest that never smoking women exposed to residential radon concentrations above 200 Bq/m3 have a close to 3-fold higher risk of lung cancer.