Abstract: Objective The aim of this study was to analyze the incidence and mortality characteristics of lung cancer in Nantong city from 2013 to 2017,and to provide a reference for the formulation of comprehensive lung cancer prevention and control strategies in Nantong city.Methods Using the quality-controlled tumor registration data of Nantong city from 2013 to 2017,calculate lung cancer incidence(mortality),age-specific incidence(mortality)and standardized incidence(mortality).Joinpoint 4.9.0 software was used to analyze the changing trend of lung cancer incidence(mortality)from 2013 to 2017.The standard population adopts the 2000 Chinese census standard population and Segi's world standard population.Results In 2013-2017,a total of 30,689 new cases of lung cancer were reported in Nantong Cancer Registry,with the crude incidence of 83.46/100,000 and a standardized incidence of 35.71/100,000.Lung cancer ranked first among all malignant tumors.The standardized incidence of men(45.24/100,000)was higher than that of women(25.47/100,000),which was 1.78 times than that in women.The standardized incidence in urban areas(39.49/100,000)was higher than that in rural areas(34.58/100,000),which was 1.11 times in rural areas.The standardized incidence of lung cancer in urban areas showed a downward trend(P＜0.05),while the standardized incidence of lung cancer in the whole population and women from rural areas showed an upward trend(P＜0.05).The incidence of lung cancer showed a trend of first increasing and then decreasing with age,reaching a peak in the 80-year-old age group(417.82/100,000),and decreasing in the 85-year-old age group.There were 23,806 deaths from lung cancer,the crude mortality was 64.74/ 100,000,and the standardized mortality was 26.08/100,000.Lung cancer ranked first among all malignant tumors.The standardized mortality for men(34.76/100,000)was higher than that of women(16.71/100,000),which was 2.08 times than that in women.The standardized mortality in urban areas(26.21/100,000)was comparable to that in rural areas(26.05/100,000).The standardized mortality of lung cancer in the whole population and urban areas showed a downward trend(P＜0.05).The mortality of lung cancer showed a trend of first increasing and then decreasing with age,reaching a peak of death in the 80-year-old age group(420.50/100,000),and decreasing in the 85-year-old and above age group.Conclusion The incidence and mortality of lung cancer in Nantong city ranks first,seriously endangering the health of local residents.It is necessary to strengthen health education,increase tobacco control publicity,and continue to promote measures such as early diagnosis and early treatment of lung cancer to reduce the burden of lung cancer disease on residents.

Key words: Cancer registry, Lung cancer, Incidence, Mortality, Nantong