[Precancerous lesion and carcinogenesis of stomach cancer]

A research on pathogenesis of gastric carcinoma was carried out by observing microcarcinoma, small carcinoma, early multicarcinoma as well as the mucosa around the cancer. The results show that the site of different types of carcinoma is correlated to the type of gastric dysplasia. In this paper, various types of gastric dysplasia and multicentric histogenesis of gastric cancer are discussed.