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Comparison of magnifying chromoendoscopy and narrow-band imaging in estimation of early colorectal cancer invasion depth: a pilot study.
Dig Endosc 2011; 23(2):118-23DE

Abstract

BACKGROUND

Several previous studies have identified narrow-band imaging (NBI) with magnification as being useful in evaluating early colorectal cancer invasion depth, but comparative diagnostic accuracy of invasion depth between pit pattern analysis using magnifying chromoendoscopy and NBI remains unclear. The aim of this retrospective study was to compare NBI and pit pattern analysis using magnifying chromoendoscopy in estimating early colorectal cancer invasion depth and to assess interobserver agreement.

PATIENTS AND METHODS

We analyzed a total of 72 early colorectal cancers in 72 patients fulfilling the inclusion criteria. Each lesion image was subsequently reviewed by two experienced colonoscopists (A, B) and then classified clinically based on invasive/non-invasive pattern and Sano's capillary pattern classification with a five-point scale of confidence.

RESULTS

In terms of diagnostic accuracy with confidence for A and B, the areas under the receiver operating characteristics curve were 0.84 and 0.81 for pit pattern analysis and 0.82 and 0.79 for NBI, respectively. Interobserver agreement for the diagnosis of submucosal deep (>1000 µm) invasion was evaluated for both modalities and indicated substantial agreement with pit pattern analysis (κ = 0.63) and moderate agreement with NBI (κ = 0.44).

CONCLUSION

Estimating invasion depth of early colorectal cancer using NBI appeared to have been comparable to pit pattern analysis, but there was greater interobserver variability using NBI.

Authors+Show Affiliations

Department of Endoscopy, National Cancer Center Hospital, Tokyo, Japan.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

21429015

Citation

Sakamoto, Taku, et al. "Comparison of Magnifying Chromoendoscopy and Narrow-band Imaging in Estimation of Early Colorectal Cancer Invasion Depth: a Pilot Study." Digestive Endoscopy : Official Journal of the Japan Gastroenterological Endoscopy Society, vol. 23, no. 2, 2011, pp. 118-23.
Sakamoto T, Saito Y, Nakajima T, et al. Comparison of magnifying chromoendoscopy and narrow-band imaging in estimation of early colorectal cancer invasion depth: a pilot study. Dig Endosc. 2011;23(2):118-23.
Sakamoto, T., Saito, Y., Nakajima, T., & Matsuda, T. (2011). Comparison of magnifying chromoendoscopy and narrow-band imaging in estimation of early colorectal cancer invasion depth: a pilot study. Digestive Endoscopy : Official Journal of the Japan Gastroenterological Endoscopy Society, 23(2), pp. 118-23. doi:10.1111/j.1443-1661.2010.01049.x.
Sakamoto T, et al. Comparison of Magnifying Chromoendoscopy and Narrow-band Imaging in Estimation of Early Colorectal Cancer Invasion Depth: a Pilot Study. Dig Endosc. 2011;23(2):118-23. PubMed PMID: 21429015.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparison of magnifying chromoendoscopy and narrow-band imaging in estimation of early colorectal cancer invasion depth: a pilot study. AU - Sakamoto,Taku, AU - Saito,Yutaka, AU - Nakajima,Takeshi, AU - Matsuda,Takahisa, Y1 - 2010/12/07/ PY - 2011/3/25/entrez PY - 2011/3/25/pubmed PY - 2011/8/5/medline SP - 118 EP - 23 JF - Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society JO - Dig Endosc VL - 23 IS - 2 N2 - BACKGROUND: Several previous studies have identified narrow-band imaging (NBI) with magnification as being useful in evaluating early colorectal cancer invasion depth, but comparative diagnostic accuracy of invasion depth between pit pattern analysis using magnifying chromoendoscopy and NBI remains unclear. The aim of this retrospective study was to compare NBI and pit pattern analysis using magnifying chromoendoscopy in estimating early colorectal cancer invasion depth and to assess interobserver agreement. PATIENTS AND METHODS: We analyzed a total of 72 early colorectal cancers in 72 patients fulfilling the inclusion criteria. Each lesion image was subsequently reviewed by two experienced colonoscopists (A, B) and then classified clinically based on invasive/non-invasive pattern and Sano's capillary pattern classification with a five-point scale of confidence. RESULTS: In terms of diagnostic accuracy with confidence for A and B, the areas under the receiver operating characteristics curve were 0.84 and 0.81 for pit pattern analysis and 0.82 and 0.79 for NBI, respectively. Interobserver agreement for the diagnosis of submucosal deep (>1000 µm) invasion was evaluated for both modalities and indicated substantial agreement with pit pattern analysis (κ = 0.63) and moderate agreement with NBI (κ = 0.44). CONCLUSION: Estimating invasion depth of early colorectal cancer using NBI appeared to have been comparable to pit pattern analysis, but there was greater interobserver variability using NBI. SN - 1443-1661 UR - https://www.unboundmedicine.com/medline/citation/21429015/Comparison_of_magnifying_chromoendoscopy_and_narrow_band_imaging_in_estimation_of_early_colorectal_cancer_invasion_depth:_a_pilot_study_ L2 - https://doi.org/10.1111/j.1443-1661.2010.01049.x DB - PRIME DP - Unbound Medicine ER -