Sons H U
Surg Gynecol Obstet. 1987 Aug;165(2):183-90.
Carcinoma of the esophagus is one of the most interesting tumors due to the great diversity with regard to its regional incidence worldwide. The areas of especially high incidence include the Caspian provinces of Iran and certain regions of the People's Republic of China, South America and Africa. The precise cause of these major regional differences with regard to the incidence of carcinoma of the esophagus are still not fully clarified. The results of the present study explain conceptions with regard to the etiopathogenesis and shows that the factors with a promotive role in various individual regions differ, in some instances, considerably from one another.
食管癌是最具研究价值的肿瘤之一，因为其在全球的区域发病率差异极大。食管癌发病率特别高的地区包括伊朗里海沿岸省份、中华人民共和国某些地区、南美洲和非洲。食管癌发病率存在这些主要区域差异的确切原因仍未完全阐明。本研究结果解释了食管癌的病因发病机制相关概念，并表明在不同个体区域中起促进作用的因素在某些情况下彼此差异很大。
