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Kenta Chuman,Kenshi Yao,Takao Kanemitsu,Takashi Nagahama,Masaki Miyaoka,Haruhiko Takahashi,Kentaro Imamura,Rino Hasegawa,Toshiharu Ueki,Hiroshi Tanabe,Seiji Haraoka,Akinori Iwashita 대한소화기내시경학회 2021 Clinical Endoscopy Vol.54 No.2
Background/Aims: The objective of this study was to elucidate the histological structure of the absent microsurface patterns (MSPs)that were visualized by magnifying endoscopy with narrow-band imaging (M-NBI). Methods: The study included consecutive gastric epithelial neoplasias for which M-NBI findings and histological findings couldbe compared on a one-to-one basis. The lesions were classified as absent MSPs and present MSPs based on the findings obtainedusing M-NBI. Of the histopathological findings for each lesion that corresponded to M-NBI findings, crypt opening densities, cryptlengths, crypt opening diameters, intercrypt distances, and crypt angles were measured and compared. Results: Thirty-six lesions were included in the analysis; of these, 17 lesions exhibited absent MSP and 19 lesions exhibited presentMSP. Comparing the histological measurements for absent MSPs vs. present MSPs, median crypt opening density was 0.9 cryptopenings/mm vs. 4.8 crypt openings/mm (p<0.001), respectively. The median crypt length, median crypt opening diameter, medianintercrypt distance, and median crypt angle were 80.0 μm vs. 160 μm (p<0.001), 40.0 μm vs. 44.2 μm (p=0.09), 572.5 μm vs. 166.7μm (p<0.001), and 21.6 degrees vs. 15.5 degrees (p<0.001), respectively. Conclusions: Histological findings showed that lesions exhibiting absent MSPs had lower crypt opening density, shorter crypt length,greater intercrypt distance, and larger crypt angle.