Aortocaval fistula

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Background

  • Complication of abdominal aortic aneurysm
  • Rare (<1% of all AAAs, ~3% of ruptured AAAs) but life-threatening (mortality ~50%)
  • Caused by inflammation around aorta → adherence of aorta to vein → pressure and erosion into vein → fistula

Clinical Features

Differential Diagnosis

Diffuse Abdominal pain

Evaluation

  • US to identify AAA
  • CT angio

Management

Disposition

  • Admit

See Also

External Links

References