Nasopharyngeal carcinoma incidence and mortality in China, 2013.

Background: We estimated the incidence and mortality of nasopharyngeal carcinoma (NPC) in China in 2010 according to the data of 145 domestic population-based cancer registries in 2014, and no such reports since then. Hence, to further and better understand its epidemiology in China and to provide more precise scientific information for its control and prevention in China, we analyzed the NPC incidence and mortality of 255 domestic population-based cancer registries, and estimated the national rates in 2013 again.

Methods: NPC incidence and mortality data of 255 domestic cancer registries in 2013, accepted by the 2016 National Cancer Registry Annual Report, were collected and collated, and the indices of NPC such as the numbers of new cases and deaths, crude rates, age-standardized rates, and truncated rates of incidence and mortality were calculated and analyzed.

Incidence and mortality of liver cancer in China, 2010.

Liver cancer is a common malignant tumor in China and a major health concern. We aimed to estimate the liver cancer incidence and mortality in China in 2010 using liver cancer data from some Chinese cancer registries and provide reference for liver cancer prevention and treatment. We collected and evaluated the incidence and mortality data of liver cancer in 2010 from 145 cancer registries, which were included in the 2013 Chinese Cancer Registry Annual Report, calculated crude, standardized, and truncated incidences and mortalities, and estimated new liver cancer cases and deaths from liver cancer throughout China and in different regions in 2010 from Chinese practical population.

Nasopharyngeal carcinoma incidence and mortality in China in 2010.

Nasopharyngeal carcinoma (NPC) is common in South China. Although regional epidemiological data on NPC in China is available, national epidemiological data have been unavailable up to now. The goal of this study was to analyze the NPC incidence and mortality data in some domestic cancer registries, estimate these rates in China in 2010, and provide scientific information that can be harnessed for NPC control and prevention.

Cancer registration in the Peoples Republic of China.

The current situation of cancer registration in China was systematically reviewed. So far, cancer registration in China has been making a great progress in the following aspects: the number of cancer registries and covered population have increased dramatically; a registration network has been established and completed gradually; regulations and rules improved remarkably; more attention is being paid by every level of government; a lot of registration software has been created and financial support ensured. However, we are still facing some problems and challenges, such as no stable groups of registrars, shortage of training opportunities, poor data quality, insufficient utilization and lack of multidisciplinary mechanisms, so that the cancer registration system still needs to be enhanced and improved.

[Epidemiology of uterine corpus cancer in some cancer registering areas of China from 2003 - 2007].

Objective: To analyze corpus uteri epidemiology in selected cancer registering areas of China during 2003 - 2007, and to provide scientific information for its prevention and control in China.

Methods: The incident and mortality data of corpus uteri cancer in 32 cancer registering areas of China with better quality during 2003 - 2007, which were selected according to the criteria of and provided by National Center for Cancer Registration, were analyzed.

Results: There were 8850 new cases and 1559 death cases of corpus uteri cancer, which accounted for 2.

Obviously increasing incidence trend for males but stable pathological proportions for both genders: esophageal cancer in Zhongshan of China from 1970-2007.

Objectives: To analyze esophageal cancer incidence and pathological data of Zhongshan in China in 1970- 2007, and to provide scientific information for its prevention and control.

Methods: From Zhongshan Cancer Registry esophageal cancer incident and pathological data were obtained. Pathological proportions and trends were calculated and analyzed.

[History of cancer registration in china].

The first cancer registry office was established in 1959 in China. In 1969, most provinces, autonomous regions and independently administered municipal districts had their own cancer prevention offices. In the 1970s, many cancer high incidence areas began their work on cancer registration.

[Trend of changes on incidence and pathological proportions of nasopharyngeal carcinoma in Zhongshan city, Guangdong province, during 1970 - 2007].

Objective: To understand the nasopharyngeal carcinoma (NPC) incidence and pathological changes in Zhongshan city, during 1970 - 2007.

Methods: Data on NPC in Zhongshan during 1970 - 2007 was from the Zhongshan Cancer Registry system. Indices as incident numbers, crude incidence rates, age-adjusted incidence rates, incident pathological proportion and trend etc.

Histopathological classification of nasopharyngeal carcinoma.

This article reviews all related research and reports on nasopharyngeal cancer (NPC) histopathological classifications worldwide. Despite continuous advance of Chinese and international NPC histopathological classification research, it was difficult to unify previous with current China classifications, and the China with World Health Organization (WHO) classifications. For example, non-keratinizing and undifferentiated carcinoma of the WHO NPC classification does not coincide with poorly-differentiated squamous cell carcinoma of the previous China classification.

Epidemiological trends of nasopharyngeal carcinoma in China.

Research papers and data concerning NPC epidemiology in China available worldwide were reviewed. It was found that although the results of three national all death-causes sampling surveys in China showed mortality rates in most sampling areas and all as overall to be declining continuously and remarkably, figures for 1987-2000 in some selected areas of China released by the World Health Organization were relatively stable, and the NPC incidence and mortality rates reported by Zhongshan and Sihui cities of Guangdong Province in China had shown ascending or stable trends, respectively. Differences with regard to change in NPC incidence and mortality rates over time may be caused by variation in the data quality from divergent sources, but the exact reasons clearly warrant further analysis.