In our Hospital (inpatients), operated case of gastric cancer were 80 cases during three years since 1954, possible resection were 51 cases of them. Among these 51 resected cases, I -II grade of early gastric cancer were found at the rate of 3.9% (2 cases), III were 9.8% (5 cases) and IV were 27.4% (14 cases). Otherwise operated cases of gastric cancer were 36 cases in gastric mass screening during six years since 1956, early gastric cancer were respectively 6.7% (2 cases), 20% (6 cases) and 40 % (12 cases) in proportion to 30 resected cases of them. Therefore discovery f requence of early gastric cancer was two times as much as our Hospital (inpatients) in gastric mass screening. The histo-pathological classification of those early gastric cancer was as follows. Adenocarcinoma was in the majority of them. That f requence decreased in order of mucinous carcinoma, anaplastic cancer and gallert carcinoma. In comparison with the treated case at our ho-spital and : at gastric mass screening, discovery frequency of early gastric cancer at the later was more much than at the former, more-over there were a .few of subjective symptome, abdominal findings and other clinical findings in such a case. The original place of early gastric cancer was seen in antrum, for the most part, lin addition, tumor types was seen more mainly than others, ulcer types largely in corpus.

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The purpese of this paper is to discuss the problems of early detection of gastric carcinoma through gastrocamera. We have made an attempt to standardize the diagnostic criteria of early gastric carcinoma in gastrocamera, by means of comparing the gastrocamera pictures with the macroscopic findings of the subsequently resected stomachs which were confirmed to be early cancer by mi-croscopic studies with serial sectioning. During the period 1957 to 1962, 595 stomachs were resected at Toma Hospital, including 172 stomachs with carcinoma, of which 56 cases were found at their early stages by gastrocamera. The material of this study are these 56 cases, which consist of 2 of the elevated form, 50 of the sup-erficial form, and 4 of the hollow form in ma-croscopic classification. The macroscopic classifica-tion of early gastric carcinoma by the Japan Gastroenterological Endoscopic Society is applied in this study, since early carcinoma is difficult to be expressed with Borrmann's classification. The absolute majority of our cases of early gastric carcinoma belongs to the superficial form. The discussion in the present study, therefore, will be limited to this form.

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