Comparison of diagnostic efficacy of conventional white light endoscopy and magnifying endoscopy combined with narrow-band imaging for intestinal-type gastric adenoma in benign lesions

Abstract

Objective To compare the diagnostic accuracy of white light endoscopy (WLE) and magnifying endoscopy combined with narrow-band imaging (ME-NBI) for intestinal-type gastric adenoma in benign lesions. Methods Data of patients with suspected early gastric neoplastic lesions diagnosed with WLE were collected from Shanghai Renji Hospital from January 2016 to December 2017. Patients with suspected early gastric neoplastic lesions by WLE were examined with WLE, ME-NBI and targeted biopsy again within 2 weeks. The results of WLE, ME-NBI and biopsy were recorded. Using pathological diagnosis as the golden standard, diagnostic efficacy of WLE and ME-NBI for intestinal-type gastric adenoma and other non-adenoma lesions was evaluated. Results A total of 232 patients (232 lesions) were included, i. e., 124 intestinal-type gastric adenoma and 108 other non-adenoma lesions such as atrophy, ulcers, hyperplasia, low-grade intraepithelial neoplasia, etc.. The sensitivity, negative predictive value and accuracy of ME-NBI in intestinal-type gastric adenoma were higher than those of WLE (92.7% VS 71.8%, 91.6% VS 73.7%, 91.8% VS 80.6%, all P 0.05). Conclusion Diagnostic efficacy of ME-NBI in intestinal-type gastric adenoma from other non-adenoma lesions is significantly higher than that of WLE. Key words: Adenoma; Stomach neoplasm; Endoscopy, gastrointestinal; Narrow-band imaging