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Inflammatory abdominal aortic aneurysms: does an early stage exist?

A Stella1, M Gargiulo, G L Faggioli

  • 1Department of Vascular Surgery, Bologna University, S. Orsola Hospital, Italy.

The Journal of Cardiovascular Surgery
|November 1, 1991
PubMed
Summary
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This study examines three abdominal aortic aneurysms with inflammatory features. Researchers investigated if these cases represent a distinct condition or an early phase of inflammatory abdominal aortic aneurysms.

Area of Science:

  • Vascular Surgery
  • Pathology
  • Immunology

Background:

  • Inflammatory abdominal aortic aneurysms (IAAA) present with distinct clinical and morphological features, including pain, elevated ESR, thickened walls, and lymphomonoplasmacellular infiltrate.
  • Histological examination reveals lymphomonoplasmacellular infiltrate and interstitial collagen deposits, defining these lesions.
  • IAAA diagnosis is supported by specific clinical signs and laboratory findings, differentiating them from other aortic pathologies.

Purpose of the Study:

  • To describe three cases of abdominal aortic aneurysms with unusual inflammatory characteristics.
  • To investigate the potential relationship between these cases and early-stage inflammatory abdominal aortic aneurysms.
  • To differentiate these findings from other systemic inflammatory or infectious conditions.

Related Experiment Videos

Main Methods:

  • Macroscopic examination of three abdominal aortic aneurysms, noting parietal edema, hyperemia, and lymph node hypertrophy.
  • Histological analysis to identify cellular infiltrate and interstitial changes.
  • Clinical evaluation including assessment of abdominal-lumbar pain, weight loss, erythrocyte sedimentation rate (ESR), and C-reactive protein (CRP).
  • Serological testing for syphilis, rheumatoid arthritis, and lupus erythematosus.

Main Results:

  • The three aneurysms exhibited macroscopic signs of inflammation, including edema and hyperemia, with enlarged preaortic lymph nodes.
  • Histological examination revealed widespread lymphomonoplasmacellular infiltrate and interstitial edema.
  • Patients presented with clinical symptoms of abdominal-lumbar pain, elevated ESR, and increased CRP.
  • All serological tests for syphilis, rheumatoid arthritis, and lupus erythematosus were negative.

Conclusions:

  • The described cases share features with inflammatory abdominal aortic aneurysms but lack advanced fibrosis.
  • Further research is needed to determine if these represent a distinct entity or an early stage of IAAA.
  • These findings highlight the importance of considering inflammatory processes in the differential diagnosis of aortic aneurysms.