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

VernacularTitle:广东省中山市1970-2007年鼻咽癌发病趋势及病理构成变化分析
Author: Kuang-Rong WEI ¹ ; Ying XU ; Wen-Jun ZHANG ; Zhi-Heng LIANG ; Jing LIU
Author Information

1. 广东省中山市人民医院
Keywords: Nasopharyngeal carcinoma; Incidence; Trend
From: Chinese Journal of Epidemiology 2011;32(11):1135-1138
CountryChina
Language:Chinese
Abstract: 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.were calculated and analyzed.Results The NPC world-adjusted incidence rates on males and females were relatively stable as 27.54/105 and 11.28/105 respectively.Non-keratinizing carcinoma accounted for 84.57 percent of all the new NPC cases while Keratinizing carcinoma only accounted for 5.81percent.The proportion of pathological types of cancers had not been obviously changed in Zhongshan during 1970-2007.Conclusion Although relatively stable on the trends of NPC incidence in Zhongshan during 1970-2007,it was still higher than data from the world or the nation.