1985年10月27日至年末,我们在呼伦贝尔盟有代表性的牧区新巴尔虎左旗进行了食管、胃、肝、及肺4个部位肿瘤现况调查。现报道如下。调查对象及方法以≥30岁全体居民为调查对象,用梯度筛选法进行检查。初筛检查询问病史和一般查体;2筛、3筛 From October 27, 1985 to the end of the year, we conducted a survey of the status of esophagus, stomach, liver and lung in 4 sites in Xinbaerhuzuoqi, a typical pasturing area in Hulun Buir. Report as follows now. Subjects and Methods All respondents aged 30 years or older were surveyed by gradient screening. Check the initial screening for medical history and general examination; 2 sieve, 3 sieve