食管癌在中国北方是一种常見的恶性肿瘤。根据北京市和天津市1958～1960年的生命統計,食管癌在全部癌死亡中占第二位,而在男性人口癌死亡中占第一位。为了明确食管癌在华北地区的发病情况,中国医学科学院与河南、河北、山东、山西四省的医学科学研究单位协作,于1959和1960年在这几个省的部分地 Esophageal cancer is a common malignancy in northern China. According to the life statistics of Beijing and Tianjin from 1958 to 1960, esophageal cancer ranks second in all cancer deaths and the first in male deaths from cancer. In order to clarify the incidence of esophageal cancer in North China, the Chinese Academy of Medical Sciences in collaboration with medical research units in Henan, Hebei, Shandong and Shanxi provinces, in part in 1959 and 1960 in these provinces