Management of Facial Artery Pseudoaneurysm

Diagnostic Approach

• Duplex ultrasound should be obtained whenever a pseudoaneurysm is suspected, as physical examination alone may miss more than 60% of pseudoaneurysms 1
• Ultrasound helps confirm the diagnosis and provides information on size, presence of stenosis/thrombus, and impact on arterial flow 2

Treatment Algorithm Based on Size and Symptoms

• Conservative management is appropriate for small (<2.0 cm) asymptomatic pseudoaneurysms, with studies showing that 61% of small pseudoaneurysms resolve spontaneously within 7-52 days 1, 3
• Re-evaluation by ultrasound is recommended 1 month after the original injury, and if still present at 2 months follow-up, consider more definitive treatment 1, 3
• For pseudoaneurysms ≥2.0 cm or those causing symptoms, more aggressive treatment is warranted, with options including ultrasound-guided compression therapy, ultrasound-guided thrombin injection, and surgical management 3, 4
• Ultrasound-guided compression therapy can be effective for accessible pseudoaneurysms, with success rates of 75-90% 1, 5
• Ultrasound-guided thrombin injection is highly effective with success rates of approximately 93%, but requires injection of 100-3000 international units of thrombin and has rare complications including distal thromboembolism (<2% of cases) 5
• Open surgical repair is indicated for pseudoaneurysms ≥2.0 cm that persist or recur after minimally invasive treatments, symptomatic, large, or rapidly expanding pseudoaneurysms, anastomotic pseudoaneurysms, and complications such as rupture, skin erosion, or expanding rupture into adjacent tissues 2, 3, 6

Special Considerations

• Urgent surgical repair is necessary for rupture into surrounding tissues, skin erosion, venous thrombosis or painful neuropathy from compression of adjacent structures, and active hemorrhage 1, 2, 3, 6
• Pseudoaneurysms can be easily confused with hematomas or abscesses on clinical examination, highlighting the importance of diagnostic imaging 1

Monitoring and Follow-up

• For conservatively managed pseudoaneurysms, follow-up ultrasound is recommended at 1 month, and if no resolution by 2 months, consider more definitive treatment 1, 3

Pseudoaneurysm Diagnosis and Treatment

Diagnostic Approach

• The American Journal of Kidney Diseases recommends avoiding cannulation of affected segments if alternative sites exist, for small asymptomatic pseudoaneurysms 7

Treatment Algorithm

• The American College of Radiology suggests that active hemorrhage or skin erosion are absolute indications for urgent surgical repair 8
• The American Journal of Kidney Diseases states that open surgical repair is the definitive treatment for symptomatic, large, or rapidly expanding pseudoaneurysms, and anastomotic pseudoaneurysms usually require definitive surgical treatment 7
• The American College of Radiology and the American Journal of Kidney Diseases recommend that covered intraluminal stent grafts are reserved only for patients with contraindications to surgery or lack of surgical options, due to infection risk 7, 8

Special Considerations

• The American Journal of Kidney Diseases advises checking for aneurysm/pseudoaneurysm at each dialysis session, educating patients on emergency procedures for rupture, and obtaining imaging of arterial inflow and venous outflow to assess for stenotic problems before definitive treatment 7