{
  "abstract": "Background\n\nPapillary fibroelastoma, an uncommon cardiac tumor, can cause systemic embolization and raise unique diagnostic and therapeutic challenges when superimposed on a hypertrophic cardiomyopathy.Case summary\n\nA 71-year-old woman with obstructive HCM, prior unilateral retinal artery occlusion (RAO), and progressive exertional dyspnea was referred for Mavacamten therapy. An incidental mitral chordal mass was found on baseline transthoracic echocardiography, suspicious for papillary fibroelastoma. Given the prior unilateral RAO and symptomatic LVOT obstruction, septal myectomy and mass excision were performed. Histopathology confirmed papillary fibroelastoma, and her symptoms and LVOT gradients improved significantly.Discussion\n\nThis case underscores the importance of comprehensive imaging to identify rare valvular tumors as potential embolic sources in patients with obstructive HCM and prior embolic events, with important management implications.Take-home message\n\nMitral papillary fibroelastoma in obstructive HCM, even if \"incidental,\" can be a surgically correctable embolic source beyond atrial fibrillation and may warrant combined resection and myectomy.",
  "abstract_shown": true,
  "affiliations": [
    "Division of Cardiology, Toronto General Hospital, Toronto, Ontario, Canada.",
    "Division of Pathology, Toronto General Hospital, Toronto, Ontario, Canada.",
    "Division of Cardiovascular Surgery, Toronto General Hospital, Toronto, Ontario, Canada.",
    "Division of Cardiology, Toronto General Hospital, Toronto, Ontario, Canada. Electronic address: Dr.Harry.Rakowski@uhn.ca."
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Negin Rashidi"
    },
    {
      "affs": [
        0
      ],
      "name": "Mahdi Montazeri",
      "orcid": "0000-0003-1638-6270"
    },
    {
      "affs": [
        1
      ],
      "name": "Cathy Cao"
    },
    {
      "affs": [
        1
      ],
      "name": "Michael Seidman"
    },
    {
      "affs": [
        2
      ],
      "name": "Anthony Ralph-Edwards"
    },
    {
      "affs": [
        3
      ],
      "name": "Harry Rakowski"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/csp1066gpd0sc.bib",
  "cited_by": 0,
  "doi": "10.1016/j.jaccas.2026.110553",
  "fulltext_url": "https://europepmc.org/articles/PMC13669945",
  "id": "csp1066gpd0sc",
  "issns": [
    "2666-0849"
  ],
  "landing_url": "https://europepmc.org/article/MED/42847571",
  "language": "eng",
  "licence": "CC-BY-NC-ND",
  "licence_label": "CC BY-NC-ND",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2705|Cardiomyopathy and Myosin Studies"
    ]
  ],
  "openalex": "W7220865546",
  "pdf_url": "https://europepmc.org/articles/PMC13669945?pdf=render",
  "pmcid": "PMC13669945",
  "pmid": "42847571",
  "published": "2026-10-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/csp1066gpd0sc.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:10Z",
      "native_id": "MED:42847571",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42847571"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:2705|Cardiomyopathy and Myosin Studies",
      "subfield": "cardiovascular"
    }
  ],
  "title": "Mitral Papillary Muscle Papillary Fibroelastoma in Obstructive Hypertrophic Cardiomyopathy: A Surgically Treated Embolic Source.",
  "title_text": "Mitral Papillary Muscle Papillary Fibroelastoma in Obstructive Hypertrophic Cardiomyopathy: A Surgically Treated Embolic Source.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:10Z",
  "url": "https://research.draconitic.com/paper/csp1066gpd0sc",
  "venue": "JACC. Case reports",
  "versions": []
}