大肠分型

n大肠分型中最早应用，后来随着NBI及放大内镜出现，涌现出诸多分型如、、(Kudo)、等。n以SanoCP分型应用广泛，但CPIII型(IIIA、IIIB)需要结合PP分型更为准确。n日本国内运用不统一，全球范围内推荐应用，其优点是通过NBI(无须放大)即可判断病变性质。n为了综合以上种种分型优缺点，出现了目前较为全面但稍显复杂的。Faintlyvisiblemicrovesselssurroundingthepits.Elongatedandincreasedthickervesselssurroundingthepits.Increasedthickvesselsunevenlysizedwithbranchingandcurtailedirregularity.Nearlyavascularorloosevesselswithfragmentation.Type1色泽：与周围黏膜同色或色泽略淡。血管：无血管或似有似无的单独花边状血管。腺管：一致的黑点或白点状腺管或腺管显示不清→增生性息肉。1.Canbeappliedusingcolonoscopeswithorwithoutoptical(zoom)magnification;2.Thesestructures(regularorirregular)mayrepresentthepitsandtheepitheliumofthecryptopening;3.Type2consistsofViennaclassificationtypes3,4andsuperficial5(alladenomaswitheitherloworhighgradedysplasia,orwithsuperficialsubmucosalcarcinoma).Thepresenceofhighgradedysplasiaorsuperficialsubmucosalcarcinomamaybesuggestedbyanirregularvesselorsurfacepattern,andisoftenassociatedwithatypicalmorphology(e.g.,depressedarea).