Journal of Research in Medical Sciences1735-199514220090427Lung cancer occurrence in Southern Iran139140ENMohammad JavadTarrahiGastroenterohepatology Research Center, Nemazee Hospital, Shiraz University of Medical Sciences/Department of Biostatistics, Lorestan University of Medical Sciences. tarrahi_mj@yahoo.comDavoodMehrabaniFarnazKhademolhosseiniMasoudAminiSeyed JalilMasoumiHasanJulaeeMahinFarahmand2008103020090103Background: Lung cancer is one of the fatal cancers in Iran while 12% of the mortalities are related to this cancer in the country. This active hospital-based study was undertaken to determine the occurrence of lung cancer in Fars Province, southern Iran. Methods: Data including face-to-face interview with patients and a survey of their medical and demographic records in relation to all invasive cancers were actively collected from 2002 to 2007 from four university hospitals. Results: Among 10800 cancer cases registered during this period, 238 cases were lung cancer, including 76.1% male and 23.9% female patients. 66.1% of the lung cancer cases were smokers. The mean age at the time of diagnosis was 58.3 years which was higher in males compared to females (pv