Japanese

Problems of Endoscopic Treatment for Submucosal Invasive Colorectal Cancer with Particular Attention to Lymphovenous Invasion Apart from the Invasive Front in the Deeper Layer of the Colon Naohiko Akimoto 1,2,3 , Hiroyuki Mitomi 1 , Yosuke Okamoto 4 , Shunsuke Kobayashi 1,4 , Kentaro Okamoto 1,5 , Kazuhito Ichikawa 1 , Shigeki Tomita 1 , Hideki Ueno 6 , Masamitsu Unakami 7 , Zenya Naito 3 , Choitsu Sakamoto 2 , Takahiro Fujimori 1 1Department of Molecular and Surgical Pathology, Dokkyo Medical University School of Medicine, Tochigi, Japan 2Department of Gastroenterology, Nippon Medical School, Graduate School of Medicine, Tokyo 3Departments of Integrated Diagnostic Pathology, Nippon Medical School, Graduate School of Medicine, Tokyo 4Division of Gastroenterology and Hepatology, Toho University Omori Medical Center, Tokyo 5First Department of Surgery, Dokkyo Medical University School of Medicine, Tochigi, Japan 6Department of Surgery, National Defense Medical College, Tokorozawa, Japan 7Department of Diagnostic Pathology, Watari Hospital, Fukushima, Japan Keyword: 非連続脈管侵襲 , 深達度 , 脈管侵襲 , 内視鏡的粘膜切除術 , 内視鏡的粘膜下層剝離術 pp.973-977
Published Date 2014/6/25
DOI https://doi.org/10.11477/mf.1403114194
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 As endoscopic technique progresses, endoscopic treatment will become more widely acceptable for submucosal invasive colorectal cancer with deeper invasion(T1b/SM2-CRC). However, in T1b/SM2-CRC, there are foci of DLVI(discontinuous lymphovenous invasion), which is defined as lymphatic and/or venous cancer invasion apart from the invasive front in the deeper layer of the colon. In some cases of T1b/SM2-CRC with DLVI, cancer metastasizes to the liver or lung. In the General Rules for Clinical and Pathological Studies on Cancer of the Colon, Rectum, and Anus, 8th Edition, a revision will be offered concerning the depth of tumor invasion in the colonic layers of DLVI. Therefore, careful consideration of endoscopic treatment for T1b/SM2-CRC taking DLVI into account is necessary.


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