{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,1]],"date-time":"2025-12-01T15:10:03Z","timestamp":1764601803502,"version":"3.41.2"},"reference-count":21,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2024,3,18]],"date-time":"2024-03-18T00:00:00Z","timestamp":1710720000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Surg."],"abstract":"<jats:sec><jats:title>Introduction<\/jats:title><jats:p>Accessory breast cancer (ABC) is an extremely rare condition, particularly the presence of triple-negative ABC with ipsilateral invasive <jats:italic>in situ<\/jats:italic> breast cancer. Binary breast tumors are controversial in terms of surgical methods and comprehensive treatment.<\/jats:p><\/jats:sec><jats:sec><jats:title>Case presentation<\/jats:title><jats:p>We share the case of a 64-year-old postmenopausal woman who presented with an underarm mass for 3 months. Ultrasonography and computed tomography suggested possible breast cancer with axillary lymph node metastasis. The patient underwent a left modified radical mastectomy combined with axillary lymph node dissection. The postoperative pathology confirmed a binary tumor, prompting us to initiate comprehensive treatment.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>We present the treatment approach for a rare case of triple-negative para-breast cancer complicated with carcinoma <jats:italic>in situ<\/jats:italic> of the breast, hoping to contribute new therapeutic ideas for the treatment of this disease.<\/jats:p><\/jats:sec>","DOI":"10.3389\/fsurg.2024.1252131","type":"journal-article","created":{"date-parts":[[2024,3,18]],"date-time":"2024-03-18T04:55:12Z","timestamp":1710737712000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":1,"title":["Triple-negative accessory breast cancer occurring concurrently with primary invasive breast carcinoma: a case report"],"prefix":"10.3389","volume":"11","author":[{"given":"Ling","family":"Chen","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zujian","family":"Wu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chi","family":"Guo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hengjin","family":"Wan","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shouguo","family":"Wu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guoping","family":"Wang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1965","published-online":{"date-parts":[[2024,3,18]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"531","DOI":"10.1080\/01443610701467473","article-title":"A rare case of multiple accessory breast tissue in the axillae, lower abdomen and vulval areas","volume":"27","author":"Pathak","year":"2007","journal-title":"J Obstet Gynaecol"},{"key":"B2","doi-asserted-by":"publisher","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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