{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,2]],"date-time":"2026-05-02T10:09:53Z","timestamp":1777716593263,"version":"3.51.4"},"reference-count":14,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[2001,10,1]],"date-time":"2001-10-01T00:00:00Z","timestamp":1001894400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Int J Surg Pathol"],"published-print":{"date-parts":[[2001,10]]},"abstract":"<jats:p>Myofibroblastoma of the breast is a rare benign neoplasm, which has rarely been reported in association with gynecomastia. We report a case of a 25-year-old male patient with an epithelioid myofibroblastoma arising in a context of bilateral gynecomastia. The lesion was composed of nests and cords of epithelioid cells, with round to oval nuclei, granular chrornatin, and distinct nucleoli dispersed in a myxoid to collagenous stroma with marked vascular proliferation. Immunohistocrhemical profile showed diffuse positivity for vimentin and focal immunoreactivity for desmin, whereas cytokeratins (CAM5.2 and AE1\/AE3), EMA, alph-a smooth muscle actin, actin HHF35, CEA, S1OO, factor VIII, neuron-specific enolase, CD31, and CD34 were all negative. We emphasize that this diagnosis is difficult to establish, owing to the rarity of this variant and clinical presentation.<\/jats:p>","DOI":"10.1177\/106689690100900413","type":"journal-article","created":{"date-parts":[[2007,6,21]],"date-time":"2007-06-21T21:50:28Z","timestamp":1182462628000},"page":"331-334","source":"Crossref","is-referenced-by-count":25,"title":["Mammary Epithelioid Myofibroblastoma Arising in Bilateral Gynecomastia"],"prefix":"10.1177","volume":"9","author":[{"given":"Jorge Sergio","family":"Reis-Filho","sequence":"first","affiliation":[{"name":"Institute of Molecular Pathology and Immunology of University of Porto, Portugal"}]},{"given":"Leonardo Nercolini","family":"Faoro","sequence":"additional","affiliation":[]},{"given":"Emerson Leandro","family":"Gasparetto","sequence":"additional","affiliation":[]},{"given":"Joel Takashi","family":"Totsugui","sequence":"additional","affiliation":[{"name":"Anatomic Pathology Division, Hospital de Clinicas, Federal University of Paran\u00e1, Brazil"}]},{"given":"Fernando Carlos","family":"Schmitt","sequence":"additional","affiliation":[{"name":"Institute of Molecular Pathology and Immunology of University of Porto, Portugal"}]}],"member":"179","published-online":{"date-parts":[[2001,10,1]]},"reference":[{"key":"atypb1","first-page":"493","volume":"11","author":"Wargotz ES","year":"1987","journal-title":"Sixteen cases of a distinctive benign mesenchymal tumor. 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