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大肠癌是浙江省四大肿瘤之一。1974～1976年浙江省嘉善县大肠癌的年龄调整死亡率为22.65/10万,是全省大肠癌死亡率最高的县,也是我国大肠癌高发地区。嘉善县为河流冲积,湖荡密布的水网地区。大肠癌的死亡率与患者血硒浓度和环境中硒含量有关,土壤和谷物中硒含量与肿瘤死亡率呈负
Colorectal cancer is one of the four major tumors in Zhejiang Province. From 1974 to 1976, the age-adjusted death rate of colorectal cancer in Jiashan County, Zhejiang Province was 22.65 per 100 000. It is the highest mortality rate of colorectal cancer in the province and is also a high incidence area of colorectal cancer in China. Jiashan County is a water network where alluvial rivers and lakes cover the lake. The mortality rate of colorectal cancer is related to the concentration of selenium in the blood of patients and the selenium content in the environment. The selenium content and tumor mortality in soil and cereals are negative.