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Scripta Scientifica Medica

Comparative analysis of application of conventional colonoscopy and NBI colonoscopy for detection of early colorectal cancer

Anton Tonev, Nikola Kolev, Valentin Ignatov, Georgi Ivanov, Vilian Platikanov, Aleksandar Zlatarov, Krasimir Ivanov

Abstract

PURPOSE: Extending life expectancy is one of the major causes for increasing cancer incidence rate. The objective of the present investigation is to compare the diagnostic value of conventional and narrow band imaging (NBI) colonoscopy for the early diagnosis of colorectal cancer.

MATERIAL AND METHODS: We examined 163 patients hospitalized in the First Clinic of Surgery, St. Marina University Hospital of Varna, for a period from 2010 to 2012 and compared the diagnostic modalities of conventional colonoscopy and NBI-colonoscopy.

RESULTS: NBI colonoscopy with magnifying endoscopy had the potential to detect more lesions remaining not identified by conventional endoscopy. The relative share of newly-increased mucosal changes increased by 1.9 times (52%). The newly-diagnosed lesions were mostly small sized. We diagnosed by 2.7 times more lesions sized less than one mm as well as by two times, 1.7 and 1.3 times more lesions sized 1-3 mm, 3-5 mm and 5-9 mm, respectively. The method did not establish any new formations larger than one cm or more. The main part of the newly-detected lesions presented with non-specific inflammatory changes, i.e. by 9.2 times more often when compared to conventional endoscopy and represented hyperplastic/ inflammatory polyps by 2-3 times more often. In four new lesions there were either an early cancer, or areas of high-grade dysplasia while in 12 ones there was a low-grade dysplasia.

CONCLUSION: NBI colonoscopy with magnifying endoscopy represents a reliable method for the diagnosis of small neoplasms of the colon.

Scripta Scientifica Medica 2013; 45(2): 43-47.


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DOI: http://dx.doi.org/10.14748/ssm.v45i2.320

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About The Authors

Anton Tonev
Medical University of Varna
Bulgaria

First Clinic of Surgery, St. Marina University Hospital of Varna

Nikola Kolev
Medical University of Varna
Bulgaria

First Clinic of Surgery, St. Marina University Hospital of Varna

Valentin Ignatov
Medical University of Varna
Bulgaria

First Clinic of Surgery, St. Marina University Hospital of Varna

Georgi Ivanov
Medical University of Varna
Bulgaria

First Clinic of Surgery, St. Marina University Hospital of Varna

Vilian Platikanov
Medical University of Varna
Bulgaria

Department of Anesthesiology and Intensive Care, St. Marina University Hospital of Varna

Aleksandar Zlatarov
St. Marina University Hospital of Varna
Bulgaria

First Clinic of Surgery

Krasimir Ivanov
Medical University of Varna
Bulgaria

First Clinic of Surgery, St. Marina University Hospital of Varna

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