3) 大腸 (2)潰瘍性大腸炎の拡大内視鏡分類

Magnifying Colonoscopic Classification of Ulcerative Colitis

要旨　われわれの用いている拡大内視鏡分類は以下のごとくである．活動期粘膜は①サンゴ礁状粘膜（coral reef-like appearance），②微小な上皮欠損（minute defects of epithelia；MDE），③小黄色斑（small yellowish spots；SYS）に分類され，緩解期粘膜は，④小腸絨毛様粘膜（villous-like appearance），⑤規則的な腺管配列（regularly arranged crypt opening），とに分類される．特に，微小な上皮欠損と小腸絨毛様粘膜の鑑別は通常内視鏡のみでは困難であり，拡大内視鏡観察が必要である．

　Our magnifying colonoscopic classification is as follows. Active mucosa is classified into 1. coral reef-like appearance, 2. minute defects of epithelia : MDE, 3. small yellowish spots : SYS, and quiescent mucosa is classified into 4. villous-like appearance, 5. regularly arranged crypt opening. Especially, magnifying colonoscopy is required for the discrimination between "minute defects of epithelia" and "villous-like appearance" which are difficult to differentiate by conventional colonoscopy.