Diagnostic Accuracy and Interobserver Agreement in Predicting the Submucosal Invasion of Colorectal Tumors Using Gross Findings, Pit Patterns, and Microvasculatures
Clinical Endoscopy
; : 168-171, 2013.
Article
in En
| WPRIM
| ID: wpr-162833
Responsible library:
WPRO
ABSTRACT
BACKGROUND/AIMS: Depth of invasion is one of the most important factors for establishing treatment strategy for colorectal tumors. METHODS: Three blinded experts reviewed electronic photos and video clips of 33 early colorectal cancer-like lesions. They estimated the depth of invasion based on conventional white light endoscopy (CWE), magnifying chromoendoscopy (MCE), and magnifying narrow band imaging endoscopy (MNE). RESULTS: The lesions included nine mucosal low-grade neoplasias, 16 mucosal high grade neoplasias, and eight carcinomas with invasion to the submucosal layer or beyond. The diagnostic accuracy for submucosal invasion by CWE ranged from 67% to 82%, while those by MCE and MNE ranged from 85% to 88% and 85% to 88%, respectively. The diagnostic accuracy significantly differed between CWE and MCE (p=0.034) and between CWE and MNE (p=0.039). The kappa values for CWE, MCE, and MNE among the endoscopists were 0.564, 0.673, and 0.673, respectively. CONCLUSIONS: The estimation of submucosal invasion for early colorectal cancer-like lesions based on MCE or MNE is more accurate than CWE. MCE and MNE were demonstrated to have substantial agreement for predicting submucosal invasion.
Key words
Full text:
1
Index:
WPRIM
Main subject:
Colorectal Neoplasms
/
Colonoscopy
/
Electronics
/
Electrons
/
Endoscopy
/
Narrow Band Imaging
/
Light
/
Neoplasm Staging
Type of study:
Diagnostic_studies
/
Prognostic_studies
Limits:
Humans
Language:
En
Journal:
Clinical Endoscopy
Year:
2013
Type:
Article