{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,26]],"date-time":"2026-01-26T12:34:58Z","timestamp":1769430898770,"version":"3.49.0"},"reference-count":0,"publisher":"Annali Italiani di Chirurgia","issue":"6","license":[{"start":{"date-parts":[[2024,12,20]],"date-time":"2024-12-20T00:00:00Z","timestamp":1734652800000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Ann. Ital. Chir."],"abstract":"<jats:p>AIM: We report a case of proliferative myositis (PM) of the breast, which is the second reported in the English literature. CASE PRESENTATION: A 49-year-old woman underwent surgery due to a fibroadenoma in the right and phyllodes tumor in the left breast. One month after these surgeries, a right breast mass rapidly grew at the surgical site, and biopsy did not provide a diagnosis. The lesion's rapid growth and high cellularity led to a suspicion of malignancy, and the mass was surgically removed. The immunohistochemical markers used were estrogen receptor (ER), S100, smooth muscle actin (SMA), desmin, pan-cytokeratin, Myoblast Determination Protein 1 (MyoD1), myogenin, caldesmon, calretinin, CD34, Anaplastic Lymphoma Kinase (ALK), P53, P63, and Ki67. A low Ki67 index and mitosis, lack of staining with rhabdomyosarcoma markers, and a typical checkerboard pattern ruled out malignancy. The diagnosis was PM. CONCLUSIONS: This case emphasizes the importance of recognizing pseudomalignant breast masses to avoid catastrophic overtreatment.<\/jats:p>","DOI":"10.62713\/aic.3915","type":"journal-article","created":{"date-parts":[[2024,12,20]],"date-time":"2024-12-20T23:03:05Z","timestamp":1734735785000},"source":"Crossref","is-referenced-by-count":0,"title":["Proliferative Myositis of the Breast in a Patient with Contralateral Phyllodes Tumor: A Unique Pseudomalignant Lesion"],"prefix":"10.62713","volume":"95","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6586-8092","authenticated-orcid":true,"given":"Zuhal","family":"Silav","sequence":"first","affiliation":[{"name":"Department of Pathology, Bakirkoy Dr. Sadi Konuk Education and Research Hospital, 34147 \u0130stanbul, T\u00fcrkiye"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"48935","published-online":{"date-parts":[[2024,12,20]]},"container-title":["Annali Italiani di Chirurgia"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/annaliitalianidichirurgia.it\/index.php\/aic\/article\/download\/3915\/3210","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.annaliitalianidichirurgia.it\/journal\/AIC\/95\/6\/10.62713\/aic.3915","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,1,26]],"date-time":"2026-01-26T01:45:39Z","timestamp":1769391939000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.annaliitalianidichirurgia.it\/journal\/AIC\/95\/6\/10.62713\/aic.3915"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,12,20]]},"references-count":0,"journal-issue":{"issue":"6","published-print":{"date-parts":[[2024]]}},"alternative-id":["3915"],"URL":"https:\/\/doi.org\/10.62713\/aic.3915","relation":{},"ISSN":["0003-469X","2239-253X"],"issn-type":[{"value":"0003-469X","type":"print"},{"value":"2239-253X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,12,20]]},"article-number":"1048"}}