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In cooperation with a certain local medical society, we have carried out a project of annual periodical screening for colorectal cancer for the general population in a local district since last year.<BR>A total of 1622 indwellers had applicated this screening and 5 of them had been found with colorectal cancers at the beginning year.<BR>In Japan as well as foreign countries colorectal mass survey has been expanded actively, year by year. Last year this screening tests were independently performed in about 15, 000 persons in several parts in Japan and found 28 of patients with colorectal cancer, 20 among them were with early cancer.<BR>The problem in fecal occult blood test screening is at present the fact that there are not few of false negative and false positive cases in tests.<BR>It is necessary to increase the specificity and sensitivity of the screening method. So we are developping an immunological method which is completely specific to human hemoglobin and to bleeding location of the G.I. tract.
日本大腸肛門病学会の論文