{
  "abstract": "Introduction and importance:: Male breast cancer is rare, accounting for less than 1% of breast cancer cases. The coexistence of encapsulated papillary carcinoma (EPC) and mucinous carcinoma in the same male breast is exceptionally rare.\n\nCase presentation:: A 55-year-old man presented with a long-standing right breast mass. Imaging revealed a subareolar lesion classified as BI-RADS 4C. Histologically, two adjacent tumors separated by a thin fibrous band showed the characteristic features of mucinous carcinoma and EPC. Myoepithelial markers (p63 and SMMS1) were absent within the papillae and at the tumor periphery, supporting EPC. Both components were estrogen receptor- and progesterone receptor-positive and human epidermal growth factor receptor 2-negative, with a low Ki-67 index. No lymph node metastasis was identified (pT2N0).\n\nClinical discussion:: The coexistence of EPC and mucinous carcinoma in the same male breast is extremely rare and, to our knowledge, has not been previously reported. The distinct histopathological features and immunohistochemical profiles of the two components support their classification as separate tumor entities. However, their close anatomical association raises the possibility of a common neoplastic origin, although the precise histogenetic relationship remains uncertain.\n\nConclusion:: This case highlights the diagnostic complexity of this rare tumor combination and the importance of careful morphological and immunohistochemical evaluation.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Anatomical Pathology, Chiangrai Prachanukroh Hospital, Chiang Rai, Thailand"
  ],
  "article_type": "case report",
  "arxiv": null,
  "author_total": 1,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Vimpattra Tragoolwananon",
      "orcid": "0009-0005-7490-7160"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8yzyha0bwhjvw.bib",
  "cited_by": 0,
  "doi": "10.1097/rc9.0000000000001071",
  "fulltext_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC13747394/",
  "id": "8yzyha0bwhjvw",
  "issns": [
    "2210-2612"
  ],
  "landing_url": "https://doi.org/10.1097/rc9.0000000000001071",
  "language": "en",
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Case Report"
    ],
    [
      "openalex",
      "2730|Male Breast Health Studies"
    ]
  ],
  "openalex": "W7225705233",
  "pdf_url": "https://europepmc.org/articles/PMC13747394?pdf=render",
  "pmcid": "PMC13747394",
  "pmid": "43006025",
  "published": "2026-09-29",
  "publisher": "Wolters Kluwer Health",
  "ris": "https://research.draconitic.com/paper/8yzyha0bwhjvw.ris",
  "sources": [
    {
      "first_seen": "2026-11-12T12:23:27Z",
      "native_id": "PMC13747394",
      "source": "pmc",
      "url": "https://doi.org/10.1097/rc9.0000000000001071"
    },
    {
      "first_seen": "2026-11-12T15:22:43Z",
      "native_id": "MED:43006025",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/43006025"
    }
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  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:2730|Male Breast Health Studies",
      "subfield": "oncology"
    }
  ],
  "title": "Encapsulated papillary carcinoma associated with mucinous carcinoma in the male breast: a case report",
  "title_text": "Encapsulated papillary carcinoma associated with mucinous carcinoma in the male breast: a case report",
  "type": "peer-reviewed",
  "updated_at": "2026-11-13T12:24:16Z",
  "url": "https://research.draconitic.com/paper/8yzyha0bwhjvw",
  "venue": "International Journal of Surgery Case Reports",
  "versions": []
}