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Coronary artery aneurysm: a review and hypothesis regarding etiology

Larry Nichols1, Stephen Lagana, Anil Parwani

  • 1Department of Pathology, University of Pittsburgh Medical Center, A610 Scaife Hall, 200 Lothrop St, Pittsburgh, PA 15213-2582, USA. nicholsla@upmc.edu

Archives of Pathology & Laboratory Medicine
|May 10, 2008
PubMed

Insights

Coronary artery aneurysms involve tunica media destruction, often linked to atherosclerosis and inflammation. New research suggests inflammation and matrix protein breakdown are key to their formation.

Area of Science:

  • Cardiovascular Pathology
  • Pathophysiology
  • Epidemiology

Background:

  • Coronary artery aneurysms are rare but life-threatening, associated with tunica media destruction, atherosclerosis, and inflammation.
  • Atherosclerosis is common, yet coronary aneurysms are found in only 1.5% of adults, suggesting a secondary cause in affected individuals.

Purpose of the Study:

  • To comprehensively review coronary artery aneurysm pathology, epidemiology, clinical features, and pathophysiology.
  • To integrate new research findings to enhance understanding, diagnosis, and treatment strategies.

Main Methods:

  • Literature review of pertinent studies.
  • Analysis of illustrative clinical cases from the institution.

Main Results:

  • Inflammation may bridge atherosclerosis and aneurysm formation; vasculitis causes aneurysms in children with Kawasaki disease.
  • Increased extracellular matrix proteolysis via matrix metalloproteinases or altered transforming growth factor beta signaling are potential pathogenic mechanisms.

Conclusions:

  • Coronary artery aneurysms likely result from a combination of factors, including inflammation and matrix degradation.
  • Vasculitis may be a critical factor in aneurysm development, particularly in specific populations like children with Kawasaki disease.
Abstract

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