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Time saving with narrow-band imaging for distinguishing between neoplastic and non-neoplastic small colorectal lesions.
J Gastroenterol Hepatol 2012; 27(2):351-5JG

Abstract

BACKGROUND AND AIMS

For colonoscopic examinations, the narrow-band imaging (NBI) system is more convenient and timesaving than magnifying chromoendoscopy (MCE). However, the time-saving aspects of NBI techniques have not been assessed. The present study compared interpretation times between NBI and MCE techniques in distinguishing between neoplastic and non-neoplastic small colorectal lesions.

METHODS

Between January and March 2010, 693 consecutive patients who underwent colonoscopy at the National Cancer Center Hospital, Tokyo, Japan, were enrolled. When the first lesion was detected by conventional white-light observation, the patient was randomly assigned to undergo a sequence of NBI and MCE observations (group A: NBI-MCE, group B: MCE-NBI). The time to diagnosis with each modality (NBI, from changing to NBI until diagnosis; MCE, from the start of indigo carmine solution spraying until diagnosis) was recorded by an independent observer. The sensitivity, specificity, and diagnostic accuracy of the first modality used in each group (NBI or MCE) were assessed by referring to the histopathological data.

RESULTS

Seventy-one patients with 137 lesions were randomized to group A, and 80 patients with 163 lesions to group B. The median interpretation times were 12 s (interquartile range [IQR]: 7-19 s) in group A, and 17 s (IQR: 12-24 s) in group B, the difference being significant (P < 0.001). No significant differences were observed between NBI and MCE in terms of sensitivity, specificity, and diagnostic accuracy.

CONCLUSIONS

NBI reduces the interpretation times for distinguishing between neoplastic and non-neoplastic small lesions during colonoscopies, without loss of diagnostic accuracy.

Authors+Show Affiliations

Endoscopy Division, National Cancer Center Hospital, Tokyo, Japan. tasakamo@ncc.go.jpNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

21777283

Citation

Sakamoto, Taku, et al. "Time Saving With Narrow-band Imaging for Distinguishing Between Neoplastic and Non-neoplastic Small Colorectal Lesions." Journal of Gastroenterology and Hepatology, vol. 27, no. 2, 2012, pp. 351-5.
Sakamoto T, Matsuda T, Aoki T, et al. Time saving with narrow-band imaging for distinguishing between neoplastic and non-neoplastic small colorectal lesions. J Gastroenterol Hepatol. 2012;27(2):351-5.
Sakamoto, T., Matsuda, T., Aoki, T., Nakajima, T., & Saito, Y. (2012). Time saving with narrow-band imaging for distinguishing between neoplastic and non-neoplastic small colorectal lesions. Journal of Gastroenterology and Hepatology, 27(2), pp. 351-5. doi:10.1111/j.1440-1746.2011.06854.x.
Sakamoto T, et al. Time Saving With Narrow-band Imaging for Distinguishing Between Neoplastic and Non-neoplastic Small Colorectal Lesions. J Gastroenterol Hepatol. 2012;27(2):351-5. PubMed PMID: 21777283.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Time saving with narrow-band imaging for distinguishing between neoplastic and non-neoplastic small colorectal lesions. AU - Sakamoto,Taku, AU - Matsuda,Takahisa, AU - Aoki,Takaya, AU - Nakajima,Takeshi, AU - Saito,Yutaka, PY - 2011/7/23/entrez PY - 2011/7/23/pubmed PY - 2012/5/16/medline SP - 351 EP - 5 JF - Journal of gastroenterology and hepatology JO - J. Gastroenterol. Hepatol. VL - 27 IS - 2 N2 - BACKGROUND AND AIMS: For colonoscopic examinations, the narrow-band imaging (NBI) system is more convenient and timesaving than magnifying chromoendoscopy (MCE). However, the time-saving aspects of NBI techniques have not been assessed. The present study compared interpretation times between NBI and MCE techniques in distinguishing between neoplastic and non-neoplastic small colorectal lesions. METHODS: Between January and March 2010, 693 consecutive patients who underwent colonoscopy at the National Cancer Center Hospital, Tokyo, Japan, were enrolled. When the first lesion was detected by conventional white-light observation, the patient was randomly assigned to undergo a sequence of NBI and MCE observations (group A: NBI-MCE, group B: MCE-NBI). The time to diagnosis with each modality (NBI, from changing to NBI until diagnosis; MCE, from the start of indigo carmine solution spraying until diagnosis) was recorded by an independent observer. The sensitivity, specificity, and diagnostic accuracy of the first modality used in each group (NBI or MCE) were assessed by referring to the histopathological data. RESULTS: Seventy-one patients with 137 lesions were randomized to group A, and 80 patients with 163 lesions to group B. The median interpretation times were 12 s (interquartile range [IQR]: 7-19 s) in group A, and 17 s (IQR: 12-24 s) in group B, the difference being significant (P < 0.001). No significant differences were observed between NBI and MCE in terms of sensitivity, specificity, and diagnostic accuracy. CONCLUSIONS: NBI reduces the interpretation times for distinguishing between neoplastic and non-neoplastic small lesions during colonoscopies, without loss of diagnostic accuracy. SN - 1440-1746 UR - https://www.unboundmedicine.com/medline/citation/21777283/Time_saving_with_narrow_band_imaging_for_distinguishing_between_neoplastic_and_non_neoplastic_small_colorectal_lesions_ L2 - https://doi.org/10.1111/j.1440-1746.2011.06854.x DB - PRIME DP - Unbound Medicine ER -