An Analysis of Cancer Incidence and Mortality from Zhejiang Cancer Registries in 2011

[Purpose] To investigate the cancer incidence and mortality in Zhejiang cancer registration areas in 2011. [Methods] There were 8 registries’ data qualified and accepted for cancer registry in 2011. The 8 cancer registries covered a total of 11060990 population(5542816 in male and 5518174 in female),accounting for 23.21% of Zhejiang population in 2011. Incidence and mortality stratified by areas(urban/rural),gender and age group were analyzed. The top 10 common cancers in different groups,proportion and cumulative rate were also calculated. Age-standardized rates were adjusted by Chinese standard population in 1982 and Segi’s population. [Results]The total cancer new cases and deaths were 35863 and 20432,respectively,with mortality to incidence ratio of 0.56. The morphology verified cases(MV%) accounted for 75.08%,and 0.93% of incident cases were identified by death certification only(DCO%). The cancer crude incidence in registration areas was 324.23/105(361.44/105 in male and 286.85/105 in female). Age-standardized incidence adjusted by Chinese standard population was 155.69/105,and 198.36/105 by world standard population. The cumulative incidence(0~74 age years old) was 22.66%. Both of crude and adjusted incidence in urban areas were higher than that in rural areas. The cancer crude mortality was 184.72/105(238.58/105 in male,130.62/105 in female). Age-standardized mortality adjusted by Chinese standard population was 77.38/105,and 104.21/105 by world standard population. The cumulative mortality(0~74 age years old) was 11.91%. Age-adjusted mortality in urban areas was lower than that in rural areas. The top 10 cancer incidences were lung cancer,stomach cancer,colorectal cancer,liver cancer,breast cancer,thyroid cancer,esophagal cancer,pancreas cancer,cervical cancer and brain tumor,accounting for 75.61% of all cancer incidences in registration areas.Lung cancer was the leading cause of cancer deaths,followed by liver cancer,gastric cancer,colorectal cancer,esophageal cancer and pancreas cancer. The top 10 cancers deaths accounted for 87.29% of all cancer deaths. [Conclusions] Lung cancer,digestive system malignant tumor and female breast cancer are still the major cancer burden in Zhejiang province. Thyroid cancer has been increasing in frequency at an alarming rate,it has become a new issue on the cancer prevention and control.