INTESTINE Vol.20 No.1(6)

Theme "Early Colorectal Cancer" and "Intestine", Road to future
Title Chronological trend of the management of colorectal T1 (SM) carcinoma
Publish Date 2016/01
Author Shinji Tanaka Department of Endoscopy, Hiroshima University Hospital
Author Naoki Asayama Department of Gastroenterology and Metabolism, Hiroshima University Hospital
Author Kyoku Sumimoto Department of Endoscopy, Hiroshima University Hospital
Author Hiroki Hirano Department of Gastroenterology and Metabolism, Hiroshima University Hospital
Author Yuzuru Tamaru Department of Endoscopy, Hiroshima University Hospital
Author Yuki Ninomiya Department of Gastroenterology and Metabolism, Hiroshima University Hospital
Author Kenjiro Shigita Department of Endoscopy, Hiroshima University Hospital
Author Nana Hayashi Department of Endoscopy, Hiroshima University Hospital
Author Shiro Oka Department of Endoscopy, Hiroshima University Hospital
Author Kazuaki Chayama Department of Gastroenterology and Metabolism, Hiroshima University Hospital
[ Summary ] We review the chronological trends concerning management of T1 colorectal carcinoma after endoscopic treatment. Previously, only submucosal minute invasive carcinoma (within 200-300μm) without vessel involvement and unfavorable histology. Recently according to an accumulation of data from many cases and detailed pathologic evaluation, after complete endoscopic en bloc resection, if the following conditions are met in histological examination : 1) submucosal invasion depth : less than 1,000μm, 2) histologic grade : favorable, 3) no vessel involvement and 4) budding grade : low, the patient may be considered for curative resection.
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