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  1. 学内発行雑誌
  2. The Showa University journal of medical sciences
  3. Vol.26(2014)
  4. No.1

Clinicopathological and Molecular Features of Laterally Spreading Tumors

https://showa.repo.nii.ac.jp/records/622
https://showa.repo.nii.ac.jp/records/622
01cd9386-6108-4098-bacf-870213c9d8b0
名前 / ファイル ライセンス アクション
S26_39.pdf S26_39.pdf (391.0 kB)
Item type 学内発行雑誌 / Departmental Bulletin Paper(1)
公開日 2016-01-27
タイトル
タイトル Clinicopathological and Molecular Features of Laterally Spreading Tumors
言語 en
言語
言語 eng
資源タイプ
資源タイプ departmental bulletin paper
著者 KONDA, Kenichi

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KONDA, Kenichi

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KONISHI, Kazuo

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KONISHI, Kazuo

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KATAGIRI, Atsushi

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KATAGIRI, Atsushi

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NOZAWA, Hisako

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NOZAWA, Hisako

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KUBOTA, Yutaro

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KUBOTA, Yutaro

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MURAMOTO, Takashi

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MURAMOTO, Takashi

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YANO, Yuichiro

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YANO, Yuichiro

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KIHARA, Toshihiro

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KIHARA, Toshihiro

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TOJO, Masayuki

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TOJO, Masayuki

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SHINMURA, Kensuke

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SHINMURA, Kensuke

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TAGAWA, Teppei

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TAGAWA, Teppei

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YANAGISAWA, Fumito

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YANAGISAWA, Fumito

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MAKINO, Reiko

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MAKINO, Reiko

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YOSHIDA, Hitoshi

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YOSHIDA, Hitoshi

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書誌情報 The Showa University journal of medical sciences

巻 26, 号 1, p. 39-45, 発行日 2014-03
抄録
内容記述タイプ Abstract
内容記述 Colorectal flat-elevated neoplasms can be classified into small-flat adenoma and laterally spreading tumors (LSTs), which can then be sub-categorized into granular-type (LST-G) and nongranular-type (LST-NG) LSTs with possible biological differences between them. We evaluated clinicopathological features and KRAS / BRAF mutations in 24 LST-Gs and 57 LST-NGs. PCR-based pyrosequencing assays were used to determine the presence of activating mutations in codons 12 and 13 of KRAS and in codon 600 of BRAF. Significant differences between LST-Gs and LST-NGs were observed in tumor size (30mm vs. 15mm, P<0.0001) and the frequency of KRAS mutations (75%, 18/24 vs. 5%, 3/57, P< 0.0001). For LST-NGs, the histological grade was increased with an increase in the tumor size. The frequency of submucosal cancer (SM-ca) was also higher in tumors of at least 20mm than in tumors smaller than 20mm (P<0.05). In contrast, there was no indication of a size-dependent increase in the histological grade. No significant difference in the frequency of KRAS mutation in LST-Gs and LST-NGs was related to tumor size. Two subtypes of LSTs were observed to have different clinicopathological and molecular characteristics. These findings suggest that different molecular mechanisms could exist in these subtypes of colorectal flat-type neoplasms.
DOI
関連タイプ isIdenticalTo
関連識別子 10.15369/sujms.26.39
出版者
出版者 Showa University Society
ISSN
収録物識別子タイプ ISSN
収録物識別子 0915-6380
出版タイプ
出版タイプ VoR
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