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Leaking mycotic abdominal aortic aneurysm

T M Sing1, N Young, I C O'Rourke

  • 1Department of Radiology, Westmead Hospital, NSW, Australia.

Australasian Radiology
|November 1, 1994
PubMed
Summary
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A leaking mycotic abdominal aortic aneurysm caused by Streptococcus pyogenes infection is presented. This rare condition required surgical intervention and highlights the importance of prompt diagnosis in abdominal aortic aneurysm cases.

Area of Science:

  • Vascular Surgery
  • Infectious Diseases
  • Radiology

Background:

  • Mycotic abdominal aortic aneurysms (MAAAs) are rare but life-threatening infections of the aorta.
  • Early diagnosis and treatment are crucial for patient survival.

Observation:

  • A 58-year-old female presented with abdominal pain, fever, and gastrointestinal symptoms.
  • Computed tomography revealed a retroperitoneal hematoma adjacent to a non-dilated aorta, suggesting a leak.
  • Laparotomy identified a 4 cm saccular abdominal aortic aneurysm with a 1 cm neck.

Findings:

  • The aneurysm was infected with Streptococcus pyogenes, confirmed by thrombus culture.
  • The hematoma caused significant obstruction of the right renal collecting system.

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Implications:

  • This case underscores the importance of considering infectious etiologies in aortic pathology.
  • Prompt surgical and antimicrobial management is essential for MAAA patients.
  • Further research into the pathogenesis and optimal treatment strategies for MAAAs is warranted.