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Surveillance after Endoscopic Resection of Early Colorectal Cancers Kinichi Hotta 1 , Sayo Ito 1 , Kenichiro Imai 1 , Kazunori Takada 1 , Noboru Kawata 1 , Masao Yoshida 1 , Hiroyuki Matsubayashi 1 , Hiroyuki Ono 1 1Division of Endoscopy, Shizuoka Cancer Center Keyword: 早期大腸癌 , 内視鏡切除 , サーベイランス , 局所再発 , 異時性大腸癌 pp.493-499
Published Date 2026/4/25
DOI https://doi.org/10.11477/mf.053621800610040493
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 After endoscopic treatment for early colorectal cancer, appropriate surveillance is important to detect local recurrence or metachronous colorectal cancer at an early stage. If the initial colonoscopy is suboptimal(e.g., unable to reach the cecum, inadequate bowel preparation, or insufficient visualization), a repeat examination within a short period is recommended. After completing a high-quality colonoscopy, surveillance should be planned according to lesion characteristics. For completely resected Tis colorectal cancer, the recurrence risk is higher than that of advanced adenomas, underscoring the need for a colonoscopy within one year. Conversely, follow-up for T1 colorectal cancer requires not only colonoscopies but also imaging studies(e.g., computed tomography)and tumor marker measurements. Furthermore, patients who underwent piecemeal resection have a high local recurrence rate(approximately 20%), making surveillance via colonoscopy around six months appropriate.


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

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