青海地区不同种族、人群胃癌临床流行病学研究
Clinical Epidemiological Study of Gastric Cancer in Different Races and Populations in Qinghai

胃癌是世界上第四大的常见恶性肿瘤，同时也是导致与肿瘤发展相关的最主要致死因素之一。据统计，在胃癌的新发患者中有高达百分之七十的患者都是出现在发展中国家，而中国又是个胃癌高发大国，近年来的发生趋势也逐渐递增，不过，在我国的各个地方胃癌发生率也存在着显著的差别。青海省由于地处青藏高原，也是个具有众多少数民族共存的地区，平均海拔都达到了三千米以上，其所特有的高原气候、进餐习惯、社会经济条件、环境卫生条件、教育等相关因素影响着该地区胃癌的发生发展及分布特征，但受限于该地区的经济条件和卫生技术落后等多方面原因又使得在该地区的胃癌相关死亡率位居全国前列，严重危害着当地居民的健康与生活。因此，分析青海地区胃癌患者发病情况及相关危险因素，为胃癌的早期预防和诊断提供临床依据。
Gastric cancer is the fourth most common cancer worldwide and one of the leading causes of can-cer-related death. According to statistics, up to 70% of new gastric cancer cases occur in developing countries, and China is a country with a high incidence of gastric cancer. In recent years, the inci-dence trend has been increasing year by year. There is a marked difference in the rates. Qinghai Province is located at the Qinghai-Tibet Plateau. It is a province where many ethnic groups coexist. The average altitude can reach more than 3000 meters. Its unique plateau climate, eating habits, economic conditions, health conditions, education and other related factors affect the occurrence and development of gastric cancer in this region. However, due to various reasons such as the eco-nomic conditions and backward health technology in the region, the gastric cancer-related mortali-ty rate in this region ranks among the top in the country, seriously endangering the health and life of local residents. Therefore, the incidence and related risk factors of gastric cancer patients in Qinghai area were analyzed to provide clinical basis for its prevention, early diagnosis and treat-ment.