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A Case of Early Poorly Differentiated Adenocarcinoma of the Cecum Masafumi Nomura 1 , Shinya Mitsui 1 , Hironori Aoki 1 , Fukuo Komaba 1 , Masabumi Kaneko 1 , Kyoko Hamaguchi 1 , Hajime Yamazaki 1 , Hiroyuki Maguchi 1 , On Suzuki 2 , Yoshiyasu Ambo 2 , Fumitaka Nakamura 2 , Toshiya Shinohara 3 , Kiyoto Natsui 4 , Takashi Yao 5 1Center for Gastroenterology, Teine-Keijinkai Hospital, Sapporo, Japan 2Department of Surgery, Teine-Keijinkai Hospital, Sapporo, Japan 3Department of Pathology, Teine-Keijinkai Hospital, Sapporo, Japan 4Natsui Clinic, Otaru, Japan 5Department of Human Pathology, Juntendo University School of Medicine, Tokyo Keyword: 早期大腸癌 , 低分化腺癌 , 陥凹型 , 過形成性ポリープ , NBI , narrow band imaging pp.1785-1790
Published Date 2010/10/25
DOI https://doi.org/10.11477/mf.1403102042
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 A 75-year-old man was referred to our hospital because of poorly differentiated adenocarcinoma of the cecum detected by his primary doctor. Colonoscopic examination revealed a flat elevated lesion with a central depression, measuring 7mm in diameter in the cecum. This lesion was diagnosed as a submucosal invasive cancer occurring within a hyperplastic polyp. Ileocecal resection with regional lymph node dissection was thus performed. Histological findings showed poorly differentiated adenocarcinoma invading the submucosal layer(600μm)without lymphatic and venous invasion, and lymph node metastasis in a hyperplastic polyp. It is suggested that the development of this lesion from hyperplastic polyp to invasive cancer occurred via a serrated pathway.


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

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