Abstract
During the period from April 2006 to March 2012, subjects of 26,611 people underwent examination with a small-diameter endoscope for stomach cancer screening at Kyoto Second Red Cross Hospital. Gastric cancer was detected using the small-diameter endoscope in a total of 90 cases: 81 cases of early cancer, 6 cases of advanced cancer, and 3 cases of unknown depth of invasion, in the 6 years. The cancer detection rate and early gastric cancer rate were 0.34% and 90%, respectively, which is higher than the national average detection rate. The biopsy rate and biopsy predictive value were 21.8% and 1.4%, respectively, in Fiscal 2006, but in 2011, they improved by 10.1% and 3.3%. Endoscopic anamnesis of less than 3 years was recognized in 51 cases of 90 detected cancers, and the false-negative rate was 56.7%. 92.2% of false-negative cancer was early cancer, and in most of these cases, endoscopic therapy was possible. In stomach cancer screening using a small-diameter endoscope, accuracy is sufficient, so a small-diameter endoscope was considered to be useful in screening for stomach cancer.
