{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T13:04:32Z","timestamp":1777467872167,"version":"3.51.4"},"reference-count":13,"publisher":"SAGE Publications","issue":"3-4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["BD"],"published-print":{"date-parts":[[2021,1,6]]},"abstract":"<jats:p>Bilateral ectopic axillary breast carcinoma is extremely rare. Here, we report the case of a 68-year-old woman who presented with a palpable mass in the right axilla. After ectopic breast carcinoma diagnosis, the patient underwent partial mastectomy and sentinel lymph node biopsy, followed by radiotherapy of the whole breast. Adjuvant endocrine therapy was administered for 5 years. Seven years after the first carcinoma diagnosis, the patient noticed a second tumor in the left axilla by herself at the age of 75 years. Core needle biopsy revealed second primary breast carcinoma of the axilla. She underwent partial mastectomy and sentinel lymph node biopsy followed by chemotherapy, radiotherapy, and endocrine therapy. No recurrence has been observed so far. Therefore, ectopic breast carcinoma should be treated as typical breast carcinoma.<\/jats:p>","DOI":"10.3233\/bd-200452","type":"journal-article","created":{"date-parts":[[2020,10,13]],"date-time":"2020-10-13T12:28:15Z","timestamp":1602592095000},"page":"149-153","source":"Crossref","is-referenced-by-count":4,"title":["Metachronous bilateral ectopic breast carcinoma in the axilla: A case report and literature review"],"prefix":"10.1177","volume":"39","author":[{"given":"Wakako","family":"Tsuji","sequence":"first","affiliation":[{"name":", Shiga General Hospital, , , Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","reference":[{"key":"10.3233\/BD-200452_ref1","doi-asserted-by":"crossref","first-page":"152","DOI":"10.1016\/j.ijscr.2019.05.037","article-title":"Invasive carcinoma in accessory axillary breast tissue: a case report","volume":"59","author":"Khan","year":"2019","journal-title":"Int J Surg Case Rep"},{"key":"10.3233\/BD-200452_ref2","doi-asserted-by":"crossref","first-page":"153","DOI":"10.12659\/AJCR.892650","article-title":"Invasive mucinous carcinoma arising in ectopic axillary breast tissue: a case report and literature review","volume":"16","author":"Nardello","year":"2015","journal-title":"Am J Case Rep"},{"issue":"4","key":"10.3233\/BD-200452_ref3","doi-asserted-by":"crossref","first-page":"e107","DOI":"10.1016\/j.clbc.2016.03.004","article-title":"Prevalence of ectopic breast tissue and tumor: a 20-year single center experience","volume":"16","author":"Fama","year":"2016","journal-title":"Clin Breast Cancer"},{"issue":"1","key":"10.3233\/BD-200452_ref4","doi-asserted-by":"crossref","first-page":"e1","DOI":"10.1016\/j.bjps.2010.08.015","article-title":"Approach and management of primary ectopic breast carcinoma in the axilla: where are we? 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