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- W3032868061 abstract "Objective To investigate the value of narrow band imaging（NBI） in diagnosis of early gastric cancer（EGC） and dysplasia. Methods 217 patients were enrolled. Routine endoscopy followed by narrow band imaging （NBI） , then ehromoendoscopy （indigo carmine） combined magnifying endoscopy was sequentially used. The gastric pits and microvasculature were carefully observed. According to the NBI images, the biopsy samples were taken in suspicious area to identify malignant and premalignant gastric lesions. The patients with gastric cancer or severe dysplasia required endoscopic ultrasonography（EUS） , then EGC or severe dysplasia ones needed endoscopic therapy or surgery. Results In silhouette of gastric lesion, NBI is the clearest in the above three endoscopic methods. Both mucosal pit and epithelium capillary were shown much clearer by NBI than by routine endoscopy. Of 217 patients, 19 cases of mild dysplasia, 9 cases of moderate dysplasia, 4 cases of severe dysplasia and 5 cases of EGC were finded according to histopathological diagnosis. Six patterns of gastric pits were summarized by NBI. Dysplasia usually behaviored as Ⅴ 1 or Ⅳ gastric pits, and Ⅵ mucosal pit were suspected malignant lesion. Tumorous vessels can be seen in 3 cases of EGC. Conclusion By narrow band imaging system with magnifying endoscopy, the micro gastric mucosal structure can be shown much clear. That is helpful for improving the accuracy of malignant lesion on endoscopic target biopsies and finding early gastric cancer.Key words: Early gastric cancer; Dysplasia; Gastric pit; Microvasculature ; Endoscopy; Narrow band imaging" @default.
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- W3032868061 date "2009-03-20" @default.
- W3032868061 modified "2023-09-27" @default.
- W3032868061 title "Narrow band imaging endoscopy in diagnosis of early gastric cancer and dysplasia" @default.
- W3032868061 doi "https://doi.org/10.3760/cma.j.issn.1007-5232.2009.03.009" @default.
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