Abstract
The Japanese Research Society for Gastric Cancer (JRSGC) was established in 1962, and promoted actively, basic study as well as clinical management of the disease. Leading institutions of Japan, 311 in all, participated in the society; 214 were involved with surgical oncology, 54 medical oncology, 11 radiology, and 32 basic research. In order to standardize the documentation of diagnosis, treatment, and pathological findings, the society published a manual in 1962; “The General Rules for Gastric Cancer Study in Surgery and Pathology” [1]. The manual had peen periodically improved and the 12th edition is now in use. The JRSGC and the National Cancer Center started a nationwide data collection of gastric cancer patients in 1963 using the mannual. Approximately 10 000 new patients had been registered annually from the member institutions. This registration was considered to cover approximately 16% of the gastric cancer patients in Japan. The collected data were analyzed by computer, and the results were published as annual reports (Fig. 1). The results showed the characteristics of gastric cancer as well as the latest situation of diagnosis and treatment of gastric cancer patients in Japan. Using the nationwide database, we revealed the results of gastric cancer treatments in Japan.
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