A case of left ventricular aneurysm caused by localized myocardial infarction

Tomoyuki Watanabe1, Masumi Iwai-Takano2, Yuriko Ohto3

  • 1Division of Cardiology and Internal Medicine, Health Co-op. Watari Hospital, 34 Nakaecho, Watari, Fukushima, 960-8141, Japan. t-watana@fmc.u-coop.or.jp.

Insights

A 73-year-old man developed a true cardiac aneurysm following an asymptomatic myocardial infarction. Diagnostic imaging confirmed a dyskinetic, low-perfusion cavity in the anterior wall, requiring ongoing echocardiographic monitoring.

Area of Science:

  • Cardiology
  • Medical Imaging
  • Cardiac Surgery

Background:

  • Unstable angina pectoris can indicate underlying coronary artery disease.
  • Percutaneous coronary intervention is a common treatment for acute coronary syndromes.
  • Cardiac aneurysms, though rare, can be a complication of myocardial infarction.

Purpose of the Study:

  • To report a case of incidentally discovered true cardiac aneurysm.
  • To illustrate the diagnostic utility of multimodal imaging in characterizing cardiac abnormalities.
  • To highlight the management and follow-up of asymptomatic cardiac aneurysms.

Main Methods:

  • Left ventriculography to visualize cardiac structures.
  • Echocardiography to assess wall motion and cavity characteristics.
  • Myocardial contrast echocardiography to evaluate myocardial perfusion.
  • Myocardial scintigraphy for localized defect assessment.

Main Results:

  • Incidental finding of an anterior wall cardiac cavity during left ventriculography.
  • Echocardiography revealed a dyskinetic cavity wall with reduced radial strain.
  • Myocardial contrast echocardiography demonstrated low perfusion in the cavity wall.
  • Myocardial scintigraphy confirmed a localized anterior wall defect.

Conclusions:

  • A true cardiac aneurysm was diagnosed in a patient with asymptomatic myocardial infarction.
  • Multimodal imaging techniques effectively characterized the aneurysm's features.
  • Serial echocardiography is crucial for monitoring asymptomatic cardiac aneurysms.

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