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Histological-type Diagnosis of Esophagogastric Junction Adenocarcinoma:The Viewpoint of Endoscopy Yohei Ikenoyama 1,2 , Junko Fujisaki 1 , Hiroshi Kawachi 3,4 , Kaoru Nakano 3,4 , Ken Namikawa 1 1Department of Gastroenterology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo 2Depertment of Endoscopy, Mie University Graduate School of Medicine, Tsu, Japan 3Department of Pathology, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo 4Division of Pathology, Cancer Institute, Japanese Foundation for Cancer Research, Tokyo Keyword: 食道胃接合部腺癌 , Barrett食道腺癌 , 組織型診断 , ME-NBI , 生検 pp.957-967
Published Date 2021/6/25
DOI https://doi.org/10.11477/mf.1403202491
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 Background:The accuracy of the histological-type diagnosis of EGJA(esophagogastric junction adenocarcinoma)is not clear. We aimed to clarify the pretreatment histological-type diagnostic abilities of ME-NBI(magnifying endoscopy with narrow-band imaging)and biopsy.

 Methods:We enrolled 114 patients with 116 EGJA lesions. Histological types were classified as DT(differentiated type), UDT(undifferentiated type), D-MT(DT-predominant mixed type), and UD-MT(UDT-predominant mixed type). The pretreatment diagnostic abilities of ME-NBI and biopsy for each histological type were examined. We also determined the correlation between the presence or absence of undifferentiated components in resected specimens and the SM(submucosal)invasion rate.

 Results:The diagnostic abilities for each histological type were as follows:DT(ME-NBI:99.0%[102/103]vs. biopsy:98.1%[101/103], n.s.), D-MT(ME-NBI:66.7%[8/12]vs. biopsy:16.7%[2/12], p<0.05), and UD-MT(ME-NBI:0%[0/1]vs. biopsy:0%[0/1], n.s.). The SM invasion rate was significantly higher in the UD-type group than in the group without the UD type(76.9%[10/13]vs. 16.5%[17/103], p<0.001).

 Conclusion:Pretreatment diagnosis with ME-NBI and biopsy was possible with high accuracy for DT.

 For mixed-tissue lesions, ME-NBI had a higher histological-type diagnosis concordance than biopsy. Therefore, it is necessary to observe ME-NBI in detail and select an appropriate biopsy site. Also, the pretreatment histological-type diagnosis is important because the SM invasion rate is significantly higher with the UD type in resected specimens.


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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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