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Endoscopic ultrasonography for colorectal tumors: Optimizing therapeutic indications based on prediction of vertical margin Yuki Kamigaichi 1 , Masachika Saino 1 , Takurou Hamada 1 , Hidenori Tanaka 1 , Ken Yamashita 1 , Yoshihiro Kishida 1 , Toshio Kuwai 2 , Shiro Oka 1 1Department of Gastroenterology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan 2Gastrointestinal Endoscopy and Medicine, Hiroshima University Hospital, Hiroshima, Japan Keyword: endoscopic ultrasonography , depth diagnosis , EUS-TFD classification pp.1045-1051
Published Date 2026/9/25
DOI https://doi.org/10.24479/endo.0000002818
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 Precise preoperative diagnosis is essential for suspected cT1b colorectal cancer treated via ESD. Endoscopic ultrasonography (EUS) is an indispensable modality for visualizing transmural layers in borderline cases. This review outlines practical EUS techniques and pitfalls, and introduces the “EUS-TFD classification” for predicting a safe vertical margin (VM). By analyzing discrepancy factors such as severe fibrosis and rectal location, we discuss optimized therapeutic strategies, including the role of diagnostic ESD to avoid unnecessary surgery.


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電子版ISSN 印刷版ISSN 0915-3217 東京医学社

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