Tags

Type your tag names separated by a space and hit enter

Comparative study of conventional colonoscopy, magnifying chromoendoscopy, and magnifying narrow-band imaging systems in the differential diagnosis of small colonic polyps between trainee and experienced endoscopist.
Int J Colorectal Dis. 2009 Dec; 24(12):1413-9.IJ

Abstract

BACKGROUND

Removal of colorectal neoplastic polyps can reduce the incidence of colorectal cancers. It is important to distinguish neoplastic from nonneoplastic polyps. We compared the ability of a trainee and an experienced endoscopist in distinguishing between neoplastic polyps and nonneoplastic polyps by conventional white-light, magnifying narrow-band imaging (NBI), and magnifying chromoendoscopy.

MATERIALS AND METHODS

One hundred and sixty-three small colorectal polyps from 104 patients were studied. All polyps were diagnosed by trainees and experienced endoscopists using conventional white-light, magnifying NBI, and magnifying chromoendoscopy. The kappa values of interobserver agreement between trainees and experienced endoscopists were evaluated before this study. Sensitivity, specificity, and diagnostic accuracy were assessed by reference to histopathology. The first 50 polyps were diagnosed by the trainee as the first stage and the rest 113 polyps were diagnosed as the second stage.

RESULTS

Magnifying NBI and magnifying chromoendoscopy were significant better than conventional white-light by the experienced endoscopist (diagnostic accuracy: NBI 85.3%, chromoendoscopy 87.7%, conventional view 74.8%). No significant differences were found for the trainee. The kappa values (0.77 approximately 0.85) were good for each endoscopic modality for the experienced endoscopist. However, only NBI and chromoendoscopy had acceptable kappa values (0.40 approximately 0.48) for the trainee. The trainee improved diagnostic accuracy in the second stage, but not yielded the level of the experienced endoscopist.

CONCLUSION

Magnifying NBI and magnifying chromoendoscopy had a better interobserver agreement than conventional white-light among trainees and experienced endoscopists. The trainee needs learning time to improve diagnostic ability, even using a new modality such as magnifying NBI.

Authors+Show Affiliations

Division of Gastroenterology, Department of Internal Medicine, Taipei Medical University Hospital and Digestive Disease Research Center, Taipei, Taiwan.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Comparative Study
Journal Article

Language

eng

PubMed ID

19603174

Citation

Chang, Chun-Chao, et al. "Comparative Study of Conventional Colonoscopy, Magnifying Chromoendoscopy, and Magnifying Narrow-band Imaging Systems in the Differential Diagnosis of Small Colonic Polyps Between Trainee and Experienced Endoscopist." International Journal of Colorectal Disease, vol. 24, no. 12, 2009, pp. 1413-9.
Chang CC, Hsieh CR, Lou HY, et al. Comparative study of conventional colonoscopy, magnifying chromoendoscopy, and magnifying narrow-band imaging systems in the differential diagnosis of small colonic polyps between trainee and experienced endoscopist. Int J Colorectal Dis. 2009;24(12):1413-9.
Chang, C. C., Hsieh, C. R., Lou, H. Y., Fang, C. L., Tiong, C., Wang, J. J., Wei, I. V., Wu, S. C., Chen, J. N., & Wang, Y. H. (2009). Comparative study of conventional colonoscopy, magnifying chromoendoscopy, and magnifying narrow-band imaging systems in the differential diagnosis of small colonic polyps between trainee and experienced endoscopist. International Journal of Colorectal Disease, 24(12), 1413-9. https://doi.org/10.1007/s00384-009-0760-9
Chang CC, et al. Comparative Study of Conventional Colonoscopy, Magnifying Chromoendoscopy, and Magnifying Narrow-band Imaging Systems in the Differential Diagnosis of Small Colonic Polyps Between Trainee and Experienced Endoscopist. Int J Colorectal Dis. 2009;24(12):1413-9. PubMed PMID: 19603174.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparative study of conventional colonoscopy, magnifying chromoendoscopy, and magnifying narrow-band imaging systems in the differential diagnosis of small colonic polyps between trainee and experienced endoscopist. AU - Chang,Chun-Chao, AU - Hsieh,Ching-Ruey, AU - Lou,Horng-Yuan, AU - Fang,Chia-Lang, AU - Tiong,Cheng, AU - Wang,Jen-Juh, AU - Wei,I-Van, AU - Wu,Shie-Chiang, AU - Chen,Jun-Nan, AU - Wang,Yuan-Hung, Y1 - 2009/07/15/ PY - 2009/06/23/accepted PY - 2009/7/16/entrez PY - 2009/7/16/pubmed PY - 2009/12/31/medline SP - 1413 EP - 9 JF - International journal of colorectal disease JO - Int J Colorectal Dis VL - 24 IS - 12 N2 - BACKGROUND: Removal of colorectal neoplastic polyps can reduce the incidence of colorectal cancers. It is important to distinguish neoplastic from nonneoplastic polyps. We compared the ability of a trainee and an experienced endoscopist in distinguishing between neoplastic polyps and nonneoplastic polyps by conventional white-light, magnifying narrow-band imaging (NBI), and magnifying chromoendoscopy. MATERIALS AND METHODS: One hundred and sixty-three small colorectal polyps from 104 patients were studied. All polyps were diagnosed by trainees and experienced endoscopists using conventional white-light, magnifying NBI, and magnifying chromoendoscopy. The kappa values of interobserver agreement between trainees and experienced endoscopists were evaluated before this study. Sensitivity, specificity, and diagnostic accuracy were assessed by reference to histopathology. The first 50 polyps were diagnosed by the trainee as the first stage and the rest 113 polyps were diagnosed as the second stage. RESULTS: Magnifying NBI and magnifying chromoendoscopy were significant better than conventional white-light by the experienced endoscopist (diagnostic accuracy: NBI 85.3%, chromoendoscopy 87.7%, conventional view 74.8%). No significant differences were found for the trainee. The kappa values (0.77 approximately 0.85) were good for each endoscopic modality for the experienced endoscopist. However, only NBI and chromoendoscopy had acceptable kappa values (0.40 approximately 0.48) for the trainee. The trainee improved diagnostic accuracy in the second stage, but not yielded the level of the experienced endoscopist. CONCLUSION: Magnifying NBI and magnifying chromoendoscopy had a better interobserver agreement than conventional white-light among trainees and experienced endoscopists. The trainee needs learning time to improve diagnostic ability, even using a new modality such as magnifying NBI. SN - 1432-1262 UR - https://www.unboundmedicine.com/medline/citation/19603174/Comparative_study_of_conventional_colonoscopy_magnifying_chromoendoscopy_and_magnifying_narrow_band_imaging_systems_in_the_differential_diagnosis_of_small_colonic_polyps_between_trainee_and_experienced_endoscopist_ L2 - https://doi.org/10.1007/s00384-009-0760-9 DB - PRIME DP - Unbound Medicine ER -