The role of narrow band imaging in colorectal polyp detection

Authors

  • Irina Ioana Vișovan Medical Center of Gastroenterology and Hepatology, Cluj-Napoca, Romania
  • Marcel Tanțău Regional Institute of Gastroenterology and Hepatology, University of Medicine and Pharmacy ”Iuliu Haţieganu”, Cluj-Napoca, Romania
  • Oliviu Pascu Regional Institute of Gastroenterology and Hepatology, University of Medicine and Pharmacy ”Iuliu Haţieganu”, Cluj-Napoca, Romania
  • Lidia Ciobanu Regional Institute of Gastroenterology and Hepatology, University of Medicine and Pharmacy ”Iuliu Haţieganu”, Cluj-Napoca, Romania
  • Alina Tanțău 4th Medical Clinic, University of Medicine and Pharmacy Iuliu Haţieganu, Cluj-Napoca, Romania

DOI:

https://doi.org/10.17305/bjbms.2017.1686

Keywords:

Colonoscopy, narrow band imaging, polyp detection rate, adenoma detection rate, colorectal cancer

Abstract

Colonoscopic detection and removal of polyps represent the most important prevention method for colorectal cancer. We aimed to investigate the diagnostic yield of narrow band imaging (NBI) colonoscopy for polyp detection compared with standard colonoscopy. In this prospective study, 505 patients that underwent total colonoscopy were randomized into two groups: 226 patients in NBI group and 279 in non-NBI group (standard colonoscopy). The primary endpoints were polyp detection rate (PDR) and adenoma detection rate (ADR) in both groups. Polyps detected with NBI technique were characterized according to the NBI International Colorectal Endoscopic (NICE) classification. The total number of polyps detected in NBI group was significantly higher compared with non-NBI group (325 polyps in 226 patients versus 189 polyps in 279 patients, respectively). PDR in NBI group was 55.3%, versus 43.3% in non-NBI group. ADR in NBI group was significantly higher compared with non-NBI group (35.3% versus 20%, respectively). The proportion of detected adenomas in the left-sided colon was significantly higher in NBI group (72.8% versus 61.06% in non-NBI group), which was related to an increased number of small adenomas detected in NBI group. Also, in NBI group, a significant number of flat adenomas were detected (28 versus 9 in non-NBI group). A total of 147 (45.2%) polyps were classified according to the NICE classification, and showed a good correlation with histological analysis. In conclusion, this study demonstrated increased PDR and ADR for NBI colonoscopy. A good correlation between the NICE classification and histological analysis was also observed.

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The role of narrow band imaging in colorectal polyp detection

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20-05-2017

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1.
The role of narrow band imaging in colorectal polyp detection. Biomol Biomed [Internet]. 2017 May 20 [cited 2024 Mar. 28];17(2):152-8. Available from: https://www.bjbms.org/ojs/index.php/bjbms/article/view/1686