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Cardiac plasmacytoma.

Brian Wong1, Koon Teo, Dylan Taylor

  • 1Department of Medicine (Cardiology), University of Alberta Hospitals, Edmonton, Alberta, Canada.

Cardiovascular Pathology : the Official Journal of the Society for Cardiovascular Pathology
|February 6, 2004
PubMed
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A rare case of cardiac plasmacytoma, a type of plasma cell cancer, was identified. This primary cancer metastasized to the heart, leading to fatal outcomes despite diagnostic efforts.

Area of Science:

  • Oncology
  • Pathology
  • Cardiology

Background:

  • Cardiac tumors are rare, with metastatic disease being more common than primary cardiac neoplasms.
  • Plasmacytoma, a plasma cell neoplasm, typically affects the bone marrow but can occur as a solitary extramedullary lesion.

Observation:

  • A 69-year-old woman presented with progressive dyspnea, orthopnea, fatigue, and weakness.
  • Clinical and imaging studies suggested an occult malignancy with cardiac metastasis.
  • Autopsy revealed a tumor encasing the heart and a solitary lung nodule.

Findings:

  • Histological examination confirmed two plasmacytomas: one predominantly epicardial and a solitary one in the left lung.
  • Immunohistochemical studies demonstrated monoclonal IgG and kappa light chain restriction, confirming neoplastic plasma cell origin.

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  • The findings indicate a primary cardiac plasmacytoma with a secondary lung lesion.

    • Implications:

    • This case highlights the importance of considering rare primary cardiac tumors in the differential diagnosis of unexplained cardiac symptoms.
    • Accurate diagnosis and understanding the behavior of extramedullary plasmacytomas are crucial for patient management.
    • Further research into the pathogenesis and treatment of cardiac plasmacytomas may improve outcomes for this rare malignancy.