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Related Experiment Videos

Pericardial multicystic proliferation

A D'Errico1, W F Grigioni, P Baccarini

  • 1Department of Histopathology, University of Bologna, Italy.

Pathology
|October 1, 1993
PubMed
Summary
This summary is machine-generated.

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A rare intrapericardial multilocular cyst, identified on an aortic aneurysm, was found to be a reactive lesion. This cyst exhibited mesothelial cells and inflammatory infiltrates, suggesting a non-neoplastic origin.

Area of Science:

  • Cardiovascular Pathology
  • Surgical Pathology
  • Histopathology

Background:

  • Aortic aneurysms present a risk for cardiovascular events.
  • Intrapericardial lesions are uncommon and require careful pathological evaluation.
  • Distinguishing reactive processes from neoplastic entities is crucial for patient management.

Observation:

  • A 62-year-old male presented with an intrapericardial lesion.
  • The lesion was associated with the adventitia of an aortic aneurysm.
  • Microscopic examination revealed a multilocular cystic structure.

Findings:

  • The cyst lining showed features consistent with mesothelial cells.
  • Immunocytochemistry and electron microscopy confirmed mesothelial differentiation.

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  • The stroma contained nerve bundles and inflammatory cell collections, indicative of a reactive process.

    • Implications:

    • This case highlights a rare presentation of a reactive mesothelial cyst.
    • Accurate pathological diagnosis is essential to avoid misclassification as a neoplasm.
    • Understanding reactive lesions associated with aortic aneurysms improves diagnostic accuracy.