期刊
WORLD JOURNAL OF GASTROINTESTINAL ENDOSCOPY
卷 9, 期 2, 页码 55-60出版社
BAISHIDENG PUBLISHING GROUP INC
DOI: 10.4253/wjge.v9.i2.55
关键词
Gastric cancer; Cancer screening; Upper gastrointestinal endoscopy; Overdiagnosis; Harm
资金
- Japan by the Japanese Society for the Promotion of Science, Tokyo, Japan [26460620]
Gastric cancer screening using endoscopy has recently spread in Eastern Asian countries showing increasing evidence of its effectiveness. However, despite the benefits of endoscopic screening for gastric cancer, its major harms include infection, complications, falsenegative results, false-positive results, and overdiagnosis. The most serious harm of endoscopic screening is overdiagnosis and this can occur in any cancer screening programs. Overdiagnosis is defined as the detection of cancers that would never have been found if there is no cancer screening. Overdiagnosis has been estimated from randomized controlled trials, observational studies, and modeling. It can be calculated on the basis of a comparison of the incidence of cancer between screened and unscreened individuals after the follow-up. Although the estimation method for overdiagnosis has not yet been standardized, estimation of overdiagnosis is needed in endoscopic screening for gastric cancer. To minimize overdiagnosis, the target age group and screening interval should be appropriately defined. Moreover, the balance of benefits and harms must be carefully considered to effectively introduce endoscopic screening in communities. Further research regarding overdiagnosis is warranted when evaluating the effectiveness of endoscopic screening.
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