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The Role of Endoscopic Ultrasonography(EUS) in Preoperative Depth of Invasion Assessment for Early Colorectal Cancer Yuki Kamigaichi 1 , Masachika Saino 1 , Takuro Hamada 1 , Yudai Takehara 1 , Shin Morimoto 1 , Hidenori Tanaka 1 , Ken Yamashita 1 , Yoshihiro Kishida 1 , Toshio Kuwai 2 , Koji Arihiro 3 , Shiro Oka 1 1Department of Gastroenterology, Graduate School of Biomedical and Health Sciences, Hiroshima University 2Gastrointestinal Endoscopy and Medicine, Hiroshima University Hospital 3Department of Anatomical Pathology, Hiroshima University Hospital Keyword: EUS-TFD分類 , 早期大腸癌 , 超音波内視鏡検査 , EUS , JNET分類 , 深達度診断 pp.456-465
Published Date 2026/4/25
DOI https://doi.org/10.11477/mf.053621800610040456
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 In endoscopic T1 colorectal cancer resection, securing a vertical margin(VM)of ≥500μm(the distance from the deepest tumor front to the deep margin)is considered crucial for suppressing local recurrence. As previously reported, we proposed the “endoscopic ultrasonography-tumor-free distance(EUS-TFD)classification” based on the distance from the tumor invasive front to the muscle layer on EUS(TFD). In the analysis of JNET Type 2B cases, the EUS-TFD Type I group had a significantly higher achievement rate of VM ≥500μm than the Type II group(p<0.01)and was an independent predictor in the multivariate analysis. This classification is useful as a preoperative predictor for achieving complete en bloc resection with VM ≥500μm by ESD and is considered an important determinant of the indication for endoscopic resection in JNET Type 2B cases.


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

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