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Background <p>Mitral valve aneurysm is a rare structural abnormality characterized by a saccular protrusion of the mitral valve leaflet. The diagnosis of a mitral valve aneurysm can be challenging, especially when echocardiography fails to show a clear saccular appearance.</p> Case presentation <p>A 66-year-old male patient exhibited no symptoms but demonstrated echocardiographic findings indicative of a suspected cardiac tumor on the anterior mitral leaflet. Transesophageal echocardiography revealed nodular lesions on the anterior mitral leaflet, each measuring 11 × 5&#xa0;mm. The findings also revealed mild mitral regurgitation. Intraoperatively, the lesions were identified as aneurysmal protrusions of the anterior mitral leaflet. Mitral valve repair was deemed unfeasible; therefore, mitral valve replacement was performed.</p> Conclusion <p>The diagnostic challenge of mitral valve aneurysm, particularly in atypical cases, highlights the importance of thorough echocardiographic evaluation.</p>

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Surgical intervention of mitral valve aneurysm: a case report

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年10月21日

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  • Kazuki Mori,
  • Satoshi Takebayashi,
  • Masato Morita,
  • Masazumi Kume,
  • Yuichi Nakazono

摘要

Background

Mitral valve aneurysm is a rare structural abnormality characterized by a saccular protrusion of the mitral valve leaflet. The diagnosis of a mitral valve aneurysm can be challenging, especially when echocardiography fails to show a clear saccular appearance.

Case presentation

A 66-year-old male patient exhibited no symptoms but demonstrated echocardiographic findings indicative of a suspected cardiac tumor on the anterior mitral leaflet. Transesophageal echocardiography revealed nodular lesions on the anterior mitral leaflet, each measuring 11 × 5 mm. The findings also revealed mild mitral regurgitation. Intraoperatively, the lesions were identified as aneurysmal protrusions of the anterior mitral leaflet. Mitral valve repair was deemed unfeasible; therefore, mitral valve replacement was performed.

Conclusion

The diagnostic challenge of mitral valve aneurysm, particularly in atypical cases, highlights the importance of thorough echocardiographic evaluation.