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A Case of T1 Colorectal Cancer Risk Stratified Using Artificial Intelligence-assisted Digital Pathology Katsuro Ichimasa 1 , Shin-ei Kudo 1 , Yuta Kouyama 1 , Yuki Takashina 1 , Yuki Miyata 1 , Shigenori Semba 1 , Tomotaka Takizawa 1 , Tatsuya Sakurai 1 , Yushi Ogawa 1 , Yasuharu Maeda 1 , Noriyuki Ogata 1 , Takemasa Hayashi 1 , Kunihiko Wakamura 1 , Tetsuo Nemoto 2 , Toshiyuki Baba 1 , Masashi Misawa 1 1Digestive Disease Center, Showa Medical University Northern Yokohama Hospital, Yokohama, Japan 2Department of Diagnostic Pathology, Showa Medical University Northern Yokohama Hospital, Yokohama, Japan Keyword: デジタルパソロジー , 人工知能 , 大腸T1癌 , ガイドライン , リンパ節転移リスク pp.1066-1070
Published Date 2025/8/25
DOI https://doi.org/10.11477/mf.053621800600081066
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 A man in his 60s showed a positive fecal occult blood test, and a colonoscopy revealed a 20-mm LST-NG(pseudodepressed type)in the transverse colon. Endoscopic submucosal dissection was performed, and pT1b(SM 2,400μm), tub1>tub2, Ly0, V0, and BD1 were detected upon pathological diagnosis. Subsequent additional surgical resection revealed no lymph node metastasis. Our artificial intelligence-assisted prediction model using whole slide image estimated a lymph mode metastasis probability of 4.8%. Further stratification of the high-risk group, which is associated with a 10% risk of metastasis and for which the guidelines “weakly recommend additional resection,” may enable the realization of more precise personalized treatment.


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

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