AKASHI Sadako
   Department   School of Medicine(Tokyo Women's Medical University Hospital), School of Medicine
   Position   Professor and Division head
Article types Original article
Language English
Peer review Peer reviewed
Title Identifying ductal carcinoma in situ cases not requiring surgery to exclude postoperative upgrade to invasive ductal carcinoma.
Journal Formal name：Breast cancer (Tokyo, Japan)
Abbreviation：Breast Cancer
ISSN code：18804233/13406868
Domestic / ForeginDomestic
Volume, Issue, Page 29(4),pp.610-617
Author and coauthor Nakayama Sayuka, Masuda Hiroko, Miura Sakiko, Kuwayama Takashi, Hashimoto Rikako, Taruno Kanae, Sawada Terumasa, Akashi-Tanaka Sadako, Nakamura Seigo
Authorship Corresponding author
Publication date 2022/07
Summary BACKGROUND:Prospective cohort studies are being conducted worldwide to identify a low-grade group of ductal carcinoma in situ (DCIS) that does not require surgery. However, to do this, it is necessary to predict which cases, diagnosed with preoperative DCIS, will be upgraded to invasive ductal carcinoma (IDC) after surgery.METHODS:In this study, we evaluated the frequency of IDC upgrades in patients who were preoperatively diagnosed with DCIS at Showa University using the criteria of ongoing clinical trials. We divided our cases into those that could be enrolled in the ongoing trial and those that could not. Moreover, we evaluated whether CNB, which is allowed only in Japanese clinical trials, is related to the IDC mixture.RESULTS:There were 211 (52.1%) cases that matched the criteria of the U.K. and Netherlands trials, of which 62 (29.4%) were upgraded to IDC. A total of 113 (27.9%) cases met the criteria for clinical trials in Japan and the U.S., 25 (22.1%) of which were upgraded to IDC and 47 (34.6%) which matched when considering biopsy methods. The number of cases upgraded to IDC decreased to four (8.5%).CONCLUSIONS:This study demonstrated that there were a certain number of mixed IDC. We will pay attention to the results of ongoing clinical trials regarding how the presence of this mixed IDC affects the prognosis in non-surgery cases. Careful follow-up is recommended for non-surgical treatment.
DOI 10.1007/s12282-022-01338-0
PMID 35278202