Clinical Endoscopy

Hyung Su Ahn

1 Article

Correlation of Narrow Band Imaging with Magnifying Colonoscopy and Histology in Colorectal Tumors: Hee Yong Yoo, Moon Sung Lee, Bong Min Ko, Hee Kyung Kim, Hyung Su Ahn, Seung Hyo Han, Jun Yong Bae, Seul Ki Min, Jong Chan Lee, Chang Beom Ryu; Clin Endosc 2011;44(1):44-50. Published online September 30, 2011; DOI: https://doi.org/10.5946/ce.2011.44.1.44

Background/Aims

Narrow band imaging (NBI) is a new technique that uses optical filters for imaging of mucosal morphology. The aim of this study was to correlate findings of NBI with magnifying colonoscopy and histology for prediction of neoplastic colorectal lesion.

Methods

Between September 2005 and December 2007, 107 colon polyps from 68 patients were detected by conventional colonoscopy and subsequently evaluated by NBI with magnifying colonoscopy and analyzed for a pit pattern and a capillary pattern. More analysis was done regarding thickness and irregularity of capillary features.

Results

Pit pattern with NBI magnification to discriminate between neoplastic and non-neoplastic lesions had a sensitivity of 88.9% and a specificity of 87.5%; capillary pattern yielded test performance characteristics of 91.9% and 87.5%. In respect of capillary thickness, invisible capillaries were found significantly more often in hyperplastic lesions. All thick capillaries were found in neoplastic polyps, and found significantly more often in carcinomas with submucosal massive invasion (sm-m) (p<0.01). In respect of capillary irregularity, invisible capillaries were found significantly more often in hyperplasic lesions, and severely irregular capillaries were found significantly more often in sm-m lesions (p<0.01).

Conclusions

Observation of capillary thickness and irregularity by NBI magnification is useful for correlating histological grade with carcinoma, especially with depth of submucosal invasion.

Citations

Citations to this article as recorded by

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