The main purpose of gastric mass screening is early detection and prompt treatment of stomach cancer and ultimately, the reduction of mortality from stomach cancer.
Therefore, we must have to review the effectiveness of the screening program and the methods of gastric mass screening.
Namely, it is essential to determine whether the mass screening is realy effective and whether it is appropriate to continue the program for secondary prevention of gastric cancer.
It is most important to adjust and to analyze data after mass screening examination to evaluate the screening program and its accuracy. For example, the number of cases of stomach cancer detected by the mass screening, differences in the rate of surgical treatment, propotions of early ones to all stomach cancers detected, post-diagnostic survival rates, post-operative life, and, mortality decreasing effect of such screening.
This time, we will report the results of gastric mass survey using the data in the Cancer Detection Center of Miyagi Cancer Society.