Clinical Features of Right-sided Early Colorectal Cancer Shuichiro Nagata 1,2 , Osamu Tsuruta 1,2 , Hiroshi Kawano 1,2 , Shin Hasegawa 1,2 , Keiko Arita 1,2 , Yasuhiko Maeyama 1,2 , Tetsuhiro Noda 1,2 , Keiichi Mitsuyama 1,2 , Michio Sata 1,2 1Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan 2Division of Endoscopy, Kurume University School Hospital, Kurume, Japan Keyword: 右側大腸癌 , HNPCC , 大腸鋸歯状病変 , SSA/P , 虫垂癌 pp.1947-1953
Published Date 2012/12/25
DOI https://doi.org/10.11477/mf.1403113674
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 As a disease to often generate a colorectal cancer of the right side colon is〔HNPCC(the hereditary nonpolyposis colorectal cancer), Lynch syndrome〕, serrated lesion of the colon〔include in particular SSA/P(sessile serrated adenoma/polyp)〕, appendix cancer. HNPCC is young onset, right-sided colon cancer, a large intestine-prone cancer, the autosomal dominant hereditary disease characterized by many organs overlap cancer, and accepts MSI(microsatellite instability)in approximately 90%. SSA/P is one of the outrider lesions of MSI-positive right-sided colon cancer, there is a lot SSA/P coexistence cancer to elderly person, woman and right-sided colon, and there are many sessile type lesions only for an early cancer except the advanced cancer. In addition, size of the whole lesion does not have the significant difference between the M cancer and the SM cancer, but there is the report that SM cancer was significantly large with the size of the cancer region except the SSA/P region. Primary appendix cancer is a relatively rare disease, but the average age is 62.0 years old, and, according to 42reports, it is said that it was 18men, woman 24.

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