Japanese
English
- 有料閲覧
- Abstract 文献概要
- 1ページ目 Look Inside
- 参考文献 Reference
- サイト内被引用 Cited by
要旨 側方発育型腫瘍(laterally spreading tumor ; LST)は形態的特徴により顆粒型と非顆粒型に大別され,さらに顆粒型はG-H(homogeneous type),G-M(nodular mixed type),非顆粒型はNG-F(flat elevated type),NG-PD(pseudo-depressed type)に亜分類される.各分類におけるpit patternの特徴について,II型,IIIL型およびIV型の亜分類も含めて検討した.G-H群はIVB型,IIIL-1型が多く,G-M群はIVB型,IVV型,VI型が多かった.NG-F群はIIIL-2型,IIIL-1型を多く認めた.NG-PD群は大部分がIIIL型で構成され,辺縁部はIIIL-2型,偽陥凹部はIIIL-1型,VI型が多かった.G-M群は結節部が,NG-PD群は偽陥凹部において周囲よりも異型度が高く,また癌化も認めた.全体的にpit pattern診断が“浅読み”される傾向があり,亜分類ごとの特性を踏まえて慎重に診断する必要がある.
LSTs(laterally spreading tumors)are classified into two types according to their morphology, granular(LST-G)and non-granular(LST-NG). Each type has two sub-groups : LST-G has homogenous(G-H)and nodular mixed(G-M)and LST-NG has flat elevated(NG-F)and pseudo-depressed(NG-PD). Each sub-group has its own distinct characteristics. Using magnifying endoscopy, most G-H lesions revealed a type IVB or type IIIL-1 pit pattern, most G-M lesions revealed a type IVB, type IVV, or type VI pit pattern, and most NG-F lesions revealed a type IIIL-2 or type IIIL-1 pit pattern. Most cases of NG-PD LST had a type IIIL pit pattern. Thus, it is important to conduct qualitative diagnosis of all cases of LSTs using magnifying endoscopy, based on the clinicopathological characteristics of the LST sub-group.
Copyright © 2014, Igaku-Shoin Ltd. All rights reserved.