Abstract:

Objective To analyze malignant tumor registration data in cancer registry areas in order to estimate cancer incidence and mortality in Guangxi in 2014. Methods Data from 9 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 9 cancer registries（3 urban，6 rural） covered a total of 6，934，753 people（2，251，773 in urban areas，4，682，980 in rural areas）. New cancer cases and cancer deaths were estimated to be，respectively，16，213 and 9，909. Morphology-verified cases （MV%） accounted for 56.92%，and 0.68% of incident cases were identified through death certifications only（DCO%）；the mortality to incidence ratio（M/I ratio） was 0.61. Crude incidence in Guangxi was 233.79/10⁵（males，262.21/10⁵；females，202.81/10⁵），age-standardized incidence based on Chinese standard population（ASR China）was 192.11/10⁵，and age-standardized incidence based on world standard population（ASR world） was 187.06/10⁵. Cumulative incidence（0~74 age years old） was 21.29%. Cancer incidence and ASR China were 264.86/10⁵ and 205.88/10⁵ in urban areas；the corresponding values in rural areas were 218.86/10⁵ and 186.65/10⁵. Crude mortality in Guangxi was 142.89/10⁵ （males，185.30/10⁵；females，96.66/10⁵），age-standardized mortality by Chinese standard population（ASR China） was 112.92/10⁵ and age-standardized mortality by world standard population （ASR world） was 111.66/10⁵. Cumulative mortality （0~74 age years old） was 12.71%. Cancer mortality and ASR China were 147.84/10⁵ and 112.51/10⁵ in urban areas；the corresponding values in rural areas were 140.51/10⁵ and 114.41/10⁵. The top 10 most frequent cancers were lung，liver，breast，colorectum，Cervix，stomach，nasopharynx，uterus，esophagus and ovary；together，these cancers accounted for 77.54% of all new cancer cases. The most frequent causes of cancer-related death were cancers of lung，liver，colorectum，stomach，breast，esophagus，nasopharynx，cervix uteri，leukemia and brain tumor；these accounted for about 82.53% of all cancer deaths. Conclusions Cancers of lung，liver，colorectum，breast，stomach are the common malignant tumors of incidence and mortality in Guangxi cancer registry areas. Cancers of liver and nasopharynx are the key targets of cancer prevention and control efforts in Guangxi. In addition，we should pay attention to female reproductive system malignant tumors and take relevant prevention and treatment measures.

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