External Validation of the Endoscopic Features of Sessile Serrated Adenomas in Expert and Trainee Colonoscopists
Clinical Endoscopy
;
: 279-286, 2017.
Article
in English
| WPRIM
| ID: wpr-165383
ABSTRACT
BACKGROUND/AIMS:
It is unclear whether the endoscopic features of sessile serrated adenomas (SSAs) would be useful to trainee colonoscopists to predict SSA. Therefore, the present study aimed to identify features that expert and trainee colonoscopists can use to independently and reliably predict SSA by using high-resolution white-light endoscopy.METHODS:
Endoscopic images of 81 polyps (39 SSAs, 22 hyperplastic polyps, and 20 tubular adenomas) from 43 patients were retrospectively evaluated by 10 colonoscopists (four experts and six trainees). Eight endoscopic features of SSAs were assessed for each polyp.RESULTS:
According to multivariable analysis, a mucous cap (odds ratio [OR], 10.44; 95% confidence interval [CI], 5.72 to 19.07), indistinctive borders (OR, 4.21; 95% CI, 2.74 to 7.16), dark spots (OR, 3.64; 95% CI, 1.89 to 7.00), and cloud-like surface (OR, 2.43; 95% CI, 1.27 to 4.668) were independent predictors of SSAs. Among these, a mucous cap, indistinctive borders, and cloud-like surface showed moderate interobserver agreement (mean κ>0.40) among experts and trainees. When ≥1 of the three predictors was observed, the sensitivity and specificity for diagnosing SSAs were 79.0% and 81.4%, respectively.CONCLUSIONS:
Colonoscopy trainees and experts can use several specific endoscopic features to independently and reliably predict SSAs.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Polyps
/
Colorectal Neoplasms
/
Adenoma
/
Observer Variation
/
Retrospective Studies
/
Sensitivity and Specificity
/
Colonoscopy
/
Education, Medical, Graduate
/
Endoscopy
Type of study:
Diagnostic study
/
Observational study
Limits:
Humans
Language:
English
Journal:
Clinical Endoscopy
Year:
2017
Type:
Article
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