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Clinical and Endoscopic Features of Metastatic Colorectal Tumors Hidenori Tanaka 1 , Yuko Hiraga 2 , Naoki Asayama 2 , Shinji Nagata 3 , Shiro Oka 4 , Shinji Tanaka 1 1Department of Endoscopy, Hiroshima University Hospital, Hiroshima, Japan 2Department of Endoscopy, Hiroshima Prefectural Hospital, Hiroshima, Japan 3Department of Gastroenterology, Hiroshima City North Medical Center Asa Citizens Hospital, Hiroshima, Japan 4Department of Gastroenterology and Metabolism, Hiroshima University Hospital, Hiroshima, Japan Keyword: 転移性大腸腫瘍 , 直接浸潤 , 腹膜播種転移 , 血行性・リンパ行性転移 , 内視鏡診断 pp.1027-1039
Published Date 2022/7/25
DOI https://doi.org/10.11477/mf.1403202955
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 Ninety-six patients with a total of 113 metastatic colorectal tumors between January 2010 and December 2021 at three institutions including our hospital were evaluated clinically and endoscopically. Gastric cancer was the primary form of cancer in 21 cases, ovarian cancer in 21, pancreatic cancer in 12, and uterine cancer in 8. In 45 cases, tumor invasion was observed via peritoneal dissemination, 35 via direct invasion, and 16 via hematogenous/lymphatic metastasis. The majority of metastases were single lesions(86 cases). Peritoneal dissemination was common in gastric and pancreatic cancer, as was direct invasion in ovarian, uterine, bladder, and prostatic cancer, and hematogenous/lymphatic metastasis in lung cancer. Stenosis or a gently sloping submucosal tumor-like lesion with erosion or ulceration is common in directly invaded tumors. Tumors that spread through the peritoneum had cobblestone-like mucosa. Tumors that spread through hematogenous/lymphatic channels showed erosion or ulceration with submucosal tumor-like elevation, such as a bull's eye lesion, or epithelial tumor-like elevation, such as a type 0-IIc lesion.


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

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