Abstract:We have performed mass surveys for colorectal cancer by using an immunological fecal occult blood test (OC Hemodia) since April, 1987. In this report, we evaluated the mass survey protocol, and investigated the upcoming problems and measures.The total number of examinees for six years until March, 1993 was 172,474. The persons needed detailed examination amounted to 6,952 (4.0%) and the persons received the detailed examination, 4, 706 (67.7%). A total of 144 colorectal cancer cases (detection rate: 0.08%, 153… Show more
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