Femoral artery pseudoaneurysm

Case contributed by Ammar Haouimi
Diagnosis almost certain

Presentation

Gunshot injury to the right upper thigh four months ago.

Patient Data

Age: 35 years
Gender: Male
ultrasound

There is a rounded sac (diameter = 7 cm) in close proximity to the superficial femoral artery with a connecting neck (3 mm) from the parent artery. The color Doppler shows a turbulent flow with the characteristic "yin-yang sign".

  • There are numerous metallic foreign bodies in the soft tissues of the right upper thigh, inguinal, and gluteal regions.
  • The CT angiography demonstrates a smooth well-defined contrast-filled sac in close proximity to the proximal portion of the superficial femoral artery. The connecting neck is not well-visualized due to the beam hardening (metal) artifacts. 

Case Discussion

Ultrasound and CT angiography of a femoral artery pseudoaneurysm due to a gunshot injury.

Femoral artery pseudoaneurysms are usually iatrogenic, as the femoral artery is the vessel of choice for most endovascular arterial interventions. other etiologies include intravenous drug use and penetrating trauma.

 

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