| Theme | True type IIc colorectal lesion? -- An issue of its morphological diagnosis | |
|---|---|---|
| Title | Type IIc early colorectal cancers -- The morphologic problems in endoscopic diagnosis | |
| Publish Date | 1998/01 | |
| 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. |
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