Pit pattern under magnifying colonoscopy in diagnosis of early colorectal cancer
- VernacularTitle:放大内镜下大肠黏膜腺管开口分型对早期大肠癌检出的意义
- Author:
Jingjing HU
;
Xinying WANG
;
Yan GENG
;
Yali ZHANG
;
Side LIU
;
Bo JIANG
- Publication Type:Journal Article
- Keywords:
Colonic neoplasms;
Early diagnosis;
Colonoscopy;
Pit pattern
- From:
Chinese Journal of Digestive Endoscopy
2008;25(8):402-405
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the diagnostic value of pit pattern analysis in detection of early colorectal carcinoma.Methods From November 2004 to August 2007,a total of 1496 colorectal lesions were observed by mannifying colonoscopy with 0.4%indigo carmine staining.The mucosal crypt patterns (classified according to Kudo classification criteria)of these lesions were compared with pathological diagnosis.Results In 1496 lesions,458(30.6%)were non-neoplastic,657(43.9%)were adenoma,and 381 (25.5%)were adenocarcinoma.In 657 adenoma lesions,415 were tubular adenoma,with low grade dysplasia in 363(87.5%),150 were tubulovillous adenomas with hish grade dysplasia in 61(40.7%)and 49 were villous adenoma with hiish grade dysplasia in 42(85.7%).Among the adenocarcinoma lesions,61 were early colorectal cancers and 36 were laterally spreading tumors(LST).The LST lesions ranged from 10 to 62 mm in diameter.The pit pattern of 3 cases was Type Ⅱ,14 were Type Ⅲ,17 were Type Ⅳ and 2 were Type Ⅴ.Conclusion Pit pattern analysis is important in distinguishing tumorous lesions from non-tumorous ones and in improving the diagnosis rate of early colorectal cancer,which helps in choosing appropriate managements.
