文献詳細
文献概要
増刊号 消化管拡大内視鏡診断2016 主題 胃
正常胃粘膜・慢性胃炎の拡大内視鏡像
著者: 金坂卓1 上堂文也1
所属機関: 1大阪府立成人病センター消化管内科
ページ範囲:P.588 - P.593
文献購入ページに移動要旨●胃炎の診断は胃癌のリスク評価において必須である.また,早期胃癌の拡大内視鏡診断を行ううえで,背景粘膜に存在する胃炎の内視鏡像を理解することは重要である.拡大観察では,正常胃底腺粘膜ではネットワーク状の上皮下毛細血管が円形の腺開口部を取り囲むパターン(foveola type)を認め,正常幽門腺粘膜では溝状の腺開口部により仕切られた畝状/乳頭状の上皮がコイル状の上皮下毛細血管を取り囲むパターン(groove type)を認める.一方,Helicobacter pylori感染による萎縮・腸上皮化生の高度な胃体部粘膜はgroove typeの粘膜に変化する.また,上皮の縁にみられる青白い線light blue crest ; LBCおよび窩間部にみられる白色不透明物質(white opaque substance ; WOS)はそれぞれ腸上皮化生を示唆する.
参考文献
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