大腸癌検診の成果および検討

Experience of mass screening for colorectal cancer using immunological fecal occult blood test

　当院では，1985年度より大腸癌検診を開始し，化学的便潜血反応にてスクリーニングを行ったが，満足する結果を得ることはできなかった，しかし，1988年度より免疫学的便潜血反応に変更し，かつ精検システムを整備，確立したところ，大腸癌発見率は飛躍的に向上し，また，早期癌の占める割合が，検診発見例で84.6％，病院全体でも60.0％と高率になり，良好な検診成績を得ることができた．

We first performed mass screening for colorectal cancer only by asking subjects about hematochezia in Nagato town and Wada village from 1978 to 1984. But no patients with colorectal cancer was found during this seven-year. (Tab.1 )

Between 1985 and 1987, we employed chemical fecal occult blood test for screening. Colon cancer was detected in the only one patient during this period.

In 1988, chemical fecal occult blood test was replaced by immunological one with establishment of thorough examination system.(Fig.1)

Colorectal cancer was detected in 13 patients since then for the last two years.