Asymptomatic vena caval fistulization complicating abdominal aortic aneurysm

Area of Science:

• Vascular Surgery
• Interventional Radiology

Background:

• Aortocaval fistulas, abnormal connections between the aorta and vena cava, often present with symptoms of aneurysm rupture.
• Ruptured aortocaval fistulas typically manifest with significant clinical signs.

Observation:

• This report details two rare cases of asymptomatic aortocaval fistulas.
• These patients did not exhibit the usual signs associated with aortocaval fistula rupture.

Findings:

• The absence of symptoms in these cases highlights an unusual presentation of aortocaval fistulas.
• Asymptomatic presentation challenges the typical clinical expectations for this condition.

Implications:

• Increased awareness of asymptomatic aortocaval fistulas is crucial for clinicians.
• Facilitates timely diagnosis and management of unexpected venous bleeding in surgical or interventional settings.