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要旨●通常内視鏡観察による早期大腸癌の深達度診断において,大腸癌研究会「内視鏡摘除の適応」プロジェクト研究班の報告では,SM浸潤度1,000μm以上の指標となる内視鏡所見は,隆起型では,緊満所見,内視鏡的硬さ,凹凸不整,粗糙,皺襞集中,ひきつれ,弧の硬化である.表面型では,それらの所見に加えて,陥凹内隆起,陥凹内凹凸,強い発赤,台状挙上,空気変形なし,易出血性が指標となる.その他,深い陥凹,結節集簇様病変における陥凹などの所見もSM深部浸潤癌を反映する所見である.
In the determination of invasion depth in early colon cancer using conventional colonoscopy, findings that indicated a submucosal(SM)invasion depth of 1,000μm or more in protruding cases included tension findings, endoscopic hardness, uneven irregularities, abrasions, concentrated wrinkles, tightness, and hardening arches. For superficial cases, in addition to these findings, we can mention protuberance and unevenness within depression, intense reddening, platform elevation, no air transformation, and tendency to easily bleed. Apart from these, deep depression and depression in LST-G are indicators of deep infiltrations in SM cancer.
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