上海崇明县是全国肝癌高发区之一。1980年起,上海市肿瘤研究所、上海市医学化验所等单位联合对这一地区原发性肝癌流行病学进行了调查,主要寻找乙肝感染以外其他独立起作用的或与乙肝病毒协同起作用的致(促)肝癌因素。共查40岁以上男性社员12,000名,发现肝癌106例,平均年粗发病率为185/10万。乙肝感染人群肝癌发生率为非感染人群的4.9～12.2倍,平均8.0倍。调查发现,玉米是该地区污染黄曲霉 Chongming County, Shanghai is one of the high incidence of liver cancer. Since 1980, Shanghai Cancer Institute, Shanghai Medical Laboratory and other units jointly investigated the epidemiology of primary liver cancer in this area, mainly looking for hepatitis B infection independently or in synergy with hepatitis B virus Of induced (promoting) liver cancer factors. A total of 12,000 male members over the age of 40 were examined, and 106 cases of liver cancer were found, with an average annual incidence of 185/10 million. The incidence of liver cancer in people with hepatitis B infection is 4.9-12.2 times of the non-infected people with an average of 8.0 times. The survey found that corn is contaminated with Aspergillus flavus in the area