全国肿瘤防治办公室于今年2月21日至28日在太原市召开了华北三省一市食管癌防治研究协作会议,以批林整风为纲,积极批林批孔,认真总结、交流了一年来的经验,并制订了1974年的研究协作计划。一年来的进展主要如下:病因学研究方面的进展过去三省一市的食管癌死亡率回顾调查结果已明确显示了该病地理分布的特点,提示其发病与环境因素有关。根据1972年发现的苗头,1973年继续在高发区林县及较低 The National Cancer Prevention and Control Office held a collaboration meeting on prevention and treatment of esophageal cancer in three provinces and one city in North China from February 21st to 28th in this year. Experience and developed a 1974 research collaboration program. The main progress in the past year is as follows: Advances in etiological research The past three provinces and one city’s review of esophageal cancer mortality has clearly demonstrated the geographical distribution of the disease, suggesting that its incidence is related to environmental factors. According to the signs discovered in 1972, in 1973 it continued to be in Linfa County and its low