{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,11]],"date-time":"2026-06-11T05:11:28Z","timestamp":1781154688173,"version":"3.54.1"},"reference-count":24,"publisher":"BMJ","issue":"10","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2024,9,25]]},"published-print":{"date-parts":[[2024,10]]},"abstract":"<jats:p>A woman in her 40s presented to the breast clinic with a 2-year history of an enlarging right breast lump. Examination revealed a 10\u2009cm firm mass in the upper outer quadrant of the right breast. MRI and ultrasonography results revealed an 8\u2009cm mass in the right breast and suspicious axillary nodes. Biopsy results of this mass revealed a sclerosed fibroadenoma (B2). Excision of the right breast lump had shown a benign phyllodes tumour, containing an incidental invasive ductal carcinoma and high-grade ductal carcinoma in situ. The patient underwent a right breast cavitectomy and sentinel lymph node biopsy, which revealed no further disease. She received adjuvant radiotherapy, chemotherapy and anti-HER2 treatment, and has remained disease-free at 20-month follow-up. The coexistence of an invasive carcinoma arising within a benign phyllodes tumour is rare. This case report underscores the importance of thoroughly examining excised specimens for phyllodes tumour to exclude malignant components.<\/jats:p>","DOI":"10.1136\/bcr-2024-262414","type":"journal-article","created":{"date-parts":[[2024,10,7]],"date-time":"2024-10-07T23:00:17Z","timestamp":1728342017000},"page":"e262414","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":1,"title":["Coexisting invasive ductal carcinoma arising within a benign phyllodes tumour"],"prefix":"10.1136","volume":"17","author":[{"given":"Reem","family":"Salem","sequence":"first","affiliation":[{"name":"Medway NHS Foundation Trust, Gillingham, Medway, UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fiona","family":"Wu","sequence":"additional","affiliation":[{"name":"Department of Surgery, Medway NHS Foundation Trust, Gillinham, Gillingham, 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