| [ Summary ] |
The authors examined 597 colorectal tumorous lesions using magnifying endoscopy, stereomicroscopy and histopathology. Lesions with type I or II pit patterns are non-tumorous, whereas lesions of types IIIs, IIIL, IV and/or V pit patterns are tumorous. Their magnifying endoscopic pit pattern images were fundamentally similar to their stereomicroscopic images. The accuracy of endoscopic diagnosis, or magnifying endoscopic diagnosis, consistent with that of stereomicroscopic diagnosis, was 86.6% (200/231 lesions). Lesions exhibiting type VA (amorphism) pit patterns are intramucosal cancers, whereas submucosal invading cancers reveal non-structural patterns (VN). |