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An Ecological Approach to Gastric Mass Survey Hidea Kurita 1 1Research Institute of Aichi Cancer Center pp.781-787
Published Date 1971/5/10
DOI https://doi.org/10.11477/mf.1403111677
  • Abstract
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 Epidemiological analysis of the results of gastric mass screening survey is important not only for its development in the years ahead but also for accurate assessment of the present percentage of gastric diseases detected thereby.

 Gastric mass survey, far more accurate than other mass screening procedures for other organs hitherto employed, calls for higher levels of diagnostic techniques, and discovery rate of early gastric cancer as well as other benign lesions of the stomach is steadily increasing in accordance with the progress in technical standard. It has also been clarified that, owing to the co-employment of gastrocamera remodeled for screening purpose, the changes seen in the gastric mucosa of the Japanese as they get older, especially the rate of atrophic changes increases markedly as the years go by.

 Comparison of clinical pictures of gastric cancer detected at mass screening survey with those found in hospitals shows that in the former gastric lesions are predominantly found in the lower corpus and the pylorus, cancer in the upper segments of the stomach being very rare. Discrepancy is also seen in its gross forms, for gastric cancers detected at mass screening survey are mostly of protruding types (in early cancer they are of type Ⅰ and Ⅱa, while in advanced one they are of type Ⅰ and Ⅱ according to Borrmann). This fact is considered as the results of difference in diagnostic techniques and of biological factors on the host side.

 Despite the well-known fact that stomach cancer is more prevalent among low socioeconomic classes than in high ones, it has been found in this investigation that most of patients with early stomach cancer found in the mass surveys belong to higher socioeconomic and intelligent classes. It has also be seen that presonality examinations have revealed nearly 40 per cent of them to have nervous tendencies. This fact seems to show that gastric mass survey is as yet not popularized enough, not universally accepted in the whole strata of Japanese society.


Copyright © 1971, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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