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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 English | WPRIM | ID: wpr-162833
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.
Subject(s)

Full text: Available Index: WPRIM (Western Pacific) Main subject: Colorectal Neoplasms / Colonoscopy / Electronics / Electrons / Endoscopy / Narrow Band Imaging / Light / Neoplasm Staging Type of study: Diagnostic study / Prognostic study Limits: Humans Language: English Journal: Clinical Endoscopy Year: 2013 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Colorectal Neoplasms / Colonoscopy / Electronics / Electrons / Endoscopy / Narrow Band Imaging / Light / Neoplasm Staging Type of study: Diagnostic study / Prognostic study Limits: Humans Language: English Journal: Clinical Endoscopy Year: 2013 Type: Article