Morphological Characteristics and Location of Missed, Advanced Colorectal Neoplasms after Colonoscopy

• Material Type: 博士論文
• Title: Morphological Characteristics and Location of Missed, Advanced Colorectal Neoplasms after Colonoscopy
• Author/Editor: Kawamura, Takuji; Uno, Koji; Tanaka, Kiyohito; Ueda, Yuki; Sakiyama, Naokuni; Nishida, Kensei; Rokutan, Kazuhito; Yasuda, Kenjiro
• Author Heading: Kawamura, Takuji; Uno, Koji; Tanaka, Kiyohito; Ueda, Yuki; Sakiyama, Naokuni; Nishida, Kensei; Rokutan, Kazuhito; Yasuda, Kenjiro
• Publication, Distribution, etc.: Faculty of Medicine Tokushima University
• Publication Date: 2016-08
• Publication Date (W3CDTF): 2016-08
• Alternative Title: 大腸内視鏡検査で見逃された結腸進行腺腫と癌の形態学的特徴と部位; Advanced neoplasms after colonoscopy
• Periodical title: The Journal of Medical Investigation
• No. or year of volume/issue: 63 3-4
• Volume: 63
• Issue: 3-4
• Pages: 163-170
• ISSN (Periodical Title): ISSN : 1349-6867; ISSN : 1343-1420
• Degree grantor/type: 徳島大学
• Date Granted: 2016-03-23
• Dissertation Number: 甲第2957号
• Degree Type: 博士（医学）
• Text Language Code: eng
• Subject Heading: Colorectal cancer; interval cancer; colon polyp; laterally spreading tumor; 大腸癌; 大腸ポリープ; 側方進展型腫瘍
• Target Audience: 一般
• Note (General): This retrospective study aimed to clarify the clinical characteristics of advanced colorectal neoplasms after colonoscopy, likely to have been missed on the previous colonoscopy. We reviewed a total of 5,768 consecutive colonoscopies performed from April 2010 to September 2013 in 4,841 patients, and analyzed advanced colorectal neoplasms after colonoscopy, particularly focusing on their morphological characteristics and locations, as compared with primary lesions, defined as lesions detected in their first colonoscopy or in a subsequent colonoscopy >5 years after the previous one. Of the 5,768 examinations, 922 advanced neoplasms (including 217 cancers with≥T2) were detected, and 167 lesions (18.1%) were diagnosed within 5 years after a previous colonoscopy (post-colonoscopy advanced neoplasms). The incidence of right-sided lesions in the post-colonoscopy advanced neoplasms (48.5%, 81/167) was significantly higher than in the primary lesions (34.0%, 257/755 ; p<0.001). We excluded 217 cancers with≥T2 from the morphological analysis to characterize early-stage post-colonoscopy advanced neoplasms. The incidence of non-polypoid lesions in the post-colonoscopy advanced neoplasms (25.6%, 41/160) was significantly higher than that in the primary lesions (12.3%, 67/545 ; p<0.001). These findings suggest that extra attention should be paid to non-polypoid, right-sided advanced colorectal neoplasms during screening and surveillance colonoscopy.
• Format (IMT): application/pdf
• Access Restrictions: インターネット公開
• Related Material (DOI): 10.2152/jmi.63.163
• Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• Original Data Provider (Database): 徳島大学 : 徳島大学機関リポジトリ

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https://repo.lib.tokushima-u.ac.jp/files/public/11/111172/20190809153307852476/LID201606101004.pdf fulltext

https://repo.lib.tokushima-u.ac.jp/files/public/11/111172/20190809153308170462/LID201609291003.pdf fulltext