Abstract:

Objective To analyze malignant tumor registration data in cancer registry areas in order to estimate cancer incidence and mortality in Guangxi in 2013. Methods Data from 6 registries were analyzed using methods and data quality control criteria of NCCR. Data were stratified by area（urban/rural），gender，age group and cancer site. Age-standardized incidence/mortality rates were calculated using the Chinese population census in 2000 and Segi's population. Results Altogether，the 6 cancer registries（2 urban，4 rural） covered a total of 5,196,871 people（1,933,143 in urban areas，3,263,728 in rural areas）. New cancer cases and cancer deaths were estimated to be，respectively，12,563 and 7,908. Morphology-verified cases （MV%） accounted for 54.07%，and 1.19% of incident cases were identified through death certifications only（DCO%）；the mortality to incidence ratio（M/I ratio） was 0.63. Crude incidence in Guangxi was 241.74/10⁵（males，273.44/10⁵；females，207.47/10⁵），age-standardized incidence based on Chinese standard population （ASR China）was 212.55/10⁵，and age-standardized incidence based on world standard population（ASR world） was 208.12/10⁵. Cumulative incidence（0~74 age years old） was 23.16%. Cancer incidence and ASR China were 256.99/10⁵ and 214.07/10⁵ in urban areas；the corresponding values in rural areas were 232.71/10⁵ and 212.49/10⁵. Crude mortality in Guangxi was 152.17/10⁵ （males，198.99/10⁵；females，101.53/10⁵），age-standardized mortality by Chinese standard population（ASR China） was 130.41/10⁵ and age-standardized mortality by world standard population （ASR world） was 129.18/10⁵. Cumulative mortality （0~74 age years old） was 14.18%. Cancer mortality and ASR China were 137.81/10⁵ and113.51/10⁵ in urban areas；the corresponding values in rural areas were 160.68/10⁵ and 141.90/10⁵. The top 10 most frequent cancers were lung，liver，colorectum，breast，stomach，nasopharynx，cervix，esophagus，brain tumor and leukemia；together，these cancers accounted for 79.15% of all new cancer cases. The most frequent causes of cancer-related death were cancers of lung，liver，colorectum，stomach，esophagus，nasopharynx，breast，brain tumor，leukemia and lymphoma；these accounted for about 83.93% of all cancer deaths. Conclusions Cancers of lung，liver，colorectum，breast，stomach，nasopharynx，cervix and esophagus are the major malignant tumors threatening the health of Guangxi residents. These cancers are the key targets of cancer prevention and control efforts in Guangxi.

Key words: Cancer registry, Malignant tumor, Incidence, Mortality, Guangxi