Thirty percent of ductal carcinoma in situ of the breast in Japan is extremely low-grade ER(+)/HER2(-) type without comedo necrosis

• 資料種別: 博士論文
• ISSN: 1349-6867
• タイトル: Thirty percent of ductal carcinoma in situ of the breast in Japan is extremely low-grade ER(+)/HER2(-) type without comedo necrosis
• 巻次・部編番号: 63 3-4
• 著者・編者: Kanematsu, Miyuki; Morimoto, Masami; Takahashi, Masako; Honda, Junko; Bando, Yoshimi; Moriya, Takuya; Tadokoro, Yukiko; Nakagawa, Misako; Takechi, Hirokazu; Yoshida, Takahiro; Toba, Hiroaki; Yoshida, Mitsuteru; Kajikawa, Aiichiro; Tangoku, Akira; Imoto, Issei; Sasa, Mitsunori
• 著者標目: Kanematsu, Miyuki; Morimoto, Masami; Takahashi, Masako; Honda, Junko; Bando, Yoshimi; Moriya, Takuya; Tadokoro, Yukiko; Nakagawa, Misako; Takechi, Hirokazu; Yoshida, Takahiro; Toba, Hiroaki; Yoshida, Mitsuteru; Kajikawa, Aiichiro; Tangoku, Akira; Imoto, Issei; Sasa, Mitsunori
• 出版事項: Faculty of Medicine Tokushima University
• 出版年月日等: 2016-08
• 出版年（W3CDTF）: 2016-08
• 並列タイトル等: 日本における非浸潤性乳管癌の30％は極めて悪性度の低いcomedo壊死を有さないER陽性/HER2陰性タイプである; 30% of Breast DCIS in Japan is low-grade
• タイトル（掲載誌）: The Journal of Medical Investigation
• 授与機関名: 徳島大学
• 授与年月日: 2022-03-16
• 授与年月日（W3CDTF）: 2022-03-16
• 報告番号: 乙第2120号
• 学位: 博士（医学）
• 博論授与番号: 乙第2120号
• 本文の言語コード: eng
• 件名標目: Low grade DCIS; Ki67 index; ER positive and HER2 negative; comedo-necrosis; mammography
• 対象利用者: 一般
• 一般注記: Background Overdiagnosis in mammography (MMG) is a problem. Combination of MMG and ultrasonography for breast cancer screening may increase overdiagnosis. Most cases of overdiagnosis are low-grade ductal carcinoma in situ (LGD), but no reports have focused on them. Materials and methods We immunostained 169 ductal carcinoma in situ (DCIS) cases for ER, PgR, HER2 and Ki67 and classified them into 4 subtypes : ER(+)/ HER2(-), ER(+)/HER2(+), ER(-)/HER2(-) and ER(-)/HER2(+). The Ki67 index was used to evaluate the grade of malignancy and examined for correlations with each ER/HER2 subtype and the nuclear grade (NG), with/without comedo necrosis. Results The Ki67 index correlated significantly with NG, both with/without comedo necrosis, and reliably evaluated the grade of malignancy. The index for ER(+)/HER2(-) (n=117, 69.2%) was 7.45±7.10, which was significantly lower than for each of the other types. The index was 5.71±6.94 for ER(+)/HER2(-) without comedo necrosis (n=52, 30.8%), which was significantly lower than with comedo necrosis. This was considered LGD, characterized by absence of microcalcification in MMG and either presence of a solid mass or cystic lesion or absence of hypoechoic areas in ultrasound. Conclusion In Japan, ER(+)/HER2(-) without comedo necrosis accounts for about 30% of DCIS and is LGD. This may be being overdiagnosed.
• DOI: info:doi/10.2152/jmi.63.192; https://doi.org/info:doi/10.2152/jmi.63.192
• 国立国会図書館永続的識別子: info:ndljp/pid/12263977; https://dl.ndl.go.jp/pid/12263977
• コレクション（共通）: 障害者向け資料
• コレクション（障害者向け資料：レベル1）: テキストデータ
• コレクション（個別）: 国立国会図書館デジタルコレクション > デジタル化資料 > 博士論文; https://dl.ndl.go.jp/collections/A00014
• 収集根拠: 博士論文（自動収集）
• 受理日（W3CDTF）: 2022-05-09T11:57:37+09:00
• 記録形式（IMT）: application/pdf
• オンライン閲覧公開範囲: 国立国会図書館内限定公開
• デジタル化資料送信: 図書館・個人送信対象外
• 遠隔複写可否（NDL）: 可
• 掲載誌（URI）: http://repo.lib.tokushima-u.ac.jp/111180
• 連携機関・データベース: 国立国会図書館 : 国立国会図書館デジタルコレクション; https://dl.ndl.go.jp