特集名 | 真の大腸IIcとは --形態の問題点 | |
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題名 | 大腸IIcのとらえ方(定義)(1) 内視鏡の立場から b. 大腸IIc --内視鏡診断における形態的問題点 | |
発刊年月 | 1998年 01月 | |
著者 | 伊藤 正祐 | 医療法人医祐会伊藤クリニック |
【 要旨 】 | 要旨はありません。 |
Theme | True type IIc colorectal lesion? -- An issue of its morphological diagnosis | |
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Title | Type IIc early colorectal cancers -- The morphologic problems in endoscopic diagnosis | |
Author | Masayu Ito | Ito Clinic |
[ Summary ] | We investigated the problems of macroscopic morphology of type IIc early colorectal cancers, and reconsidered definition of "type IIc" from a clinician standpoint. Most of type IIc lesions showed marginal elevation slightly, so called "type IIc+IIa". However the "IIa" in this type IIc+IIa lesion reveals marginal elevation, which comprises reactive normal mucosa or hyperplastic mucosa, and is confounded with usual type IIa lesion. We are easy to understand that type IIc+IIa lesion belongs to type IIc lesion, because type IIc+IIa lesion is identical to type IIc lesion, essentially. Type IIa+dep lesion is necessary to discriminate from type IIc lesion. The depression in type IIa+dep lesion, unlike type IIc lesion, is poorly demarcated and is not extensive. After dye spraying, the depression showed spicule-like projections on the margin, but they were not well-defined or extensive. The procedures of endoscopic diagnosis based on morphology will now be described. |