RESUMEN
In this paper are discussed the relationships between the infiltrating distances and the pathological types of gastric cancer by measuring the excised specimens of middle and dvanced stages in 50 cases.It is confirmed that the infiltrating distances vary according to the pathohistolog-ical types. The tubular adenocarcinoma may be divided into two subtypes: the large tubular adenocarcinoma and the small tubular adenocarcinoma. In all pathohistological types of gastric cancer the undifferentiated carcinoma, "signet-ring" cell carcinoma and tubular adenocarcinoma infiltrated farther, and the papillary adenocarcinoma and the small tubular adenocarcinoma into a less.The infiltraing type and gastric sinus carcinoma have tendency to infiltrate farther which can be observed with naked eye.These results may offered some assistance in the surgical treatment of gastric cancer.