Narrow-band imaging in the diagnosis of colorectal mucosal lesions

A pilot study

H. Machida, Y. Sano, Yasuo Hamamoto, M. Muto, T. Kozu, H. Tajiri, S. Yoshida

Research output: Contribution to journalArticle

419 Citations (Scopus)

Abstract

Background and Study Aims: A newly developed narrow-band imaging (NBI) technique, in which modified optical filters were used in the light source of a video endoscope system, was applied during colonoscopy in a clinical setting. This pilot study evaluated the clinical feasibility of the NBI system for evaluating colorectal lesions. Patients and Methods: A total of 43 colorectal lesions in 34 patients were included in the study. The quality of visualization of colorectal lesions and the accuracy of differentiation between neoplastic and non-neoplastic lesions using the NBI system were evaluated in comparison with results from conventional colonoscopy and with chromoendoscopy. Results: For pit pattern delineation, NBI was superior to conventional endoscopy (P < 0.001 ), but inferior to chromoendoscopy (P < 0.05. NBI achieved better visualization of the mucosal vascular network and of the hue of lesions than conventional endoscopy (P < 0.05). However there was no significant difference between NBI and chromoendoscopy in differentiating neoplastic from non-neoplastic lesions (both techniques had a sensitivity of 100% and a specificity 75%). This was better than the results of conventional colonoscopy (sensitivity 83%, specificity 44%; P < 0.05 for specificity). Conclusions: These results suggest that in the examination of colonic lesions the NBI system provides imaging features additional to those of both conventional endoscopy and chromoendoscopy. For distinguishing neoplasms from non-neoplastic lesions, NBI was equivalent to chromoendoscopy.

Original languageEnglish
Pages (from-to)1094-1098
Number of pages5
JournalEndoscopy
Volume36
Issue number12
DOIs
Publication statusPublished - 2004 Dec 1
Externally publishedYes

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Narrow Band Imaging
Colonoscopy
Endoscopy
Endoscopes
Blood Vessels
Light
Sensitivity and Specificity

ASJC Scopus subject areas

  • Medicine (miscellaneous)

Cite this

Machida, H., Sano, Y., Hamamoto, Y., Muto, M., Kozu, T., Tajiri, H., & Yoshida, S. (2004). Narrow-band imaging in the diagnosis of colorectal mucosal lesions: A pilot study. Endoscopy, 36(12), 1094-1098. https://doi.org/10.1055/s-2004-826040

Narrow-band imaging in the diagnosis of colorectal mucosal lesions : A pilot study. / Machida, H.; Sano, Y.; Hamamoto, Yasuo; Muto, M.; Kozu, T.; Tajiri, H.; Yoshida, S.

In: Endoscopy, Vol. 36, No. 12, 01.12.2004, p. 1094-1098.

Research output: Contribution to journalArticle

Machida, H, Sano, Y, Hamamoto, Y, Muto, M, Kozu, T, Tajiri, H & Yoshida, S 2004, 'Narrow-band imaging in the diagnosis of colorectal mucosal lesions: A pilot study', Endoscopy, vol. 36, no. 12, pp. 1094-1098. https://doi.org/10.1055/s-2004-826040
Machida, H. ; Sano, Y. ; Hamamoto, Yasuo ; Muto, M. ; Kozu, T. ; Tajiri, H. ; Yoshida, S. / Narrow-band imaging in the diagnosis of colorectal mucosal lesions : A pilot study. In: Endoscopy. 2004 ; Vol. 36, No. 12. pp. 1094-1098.
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