Successful Treatment of a Common Femoral Arterial Pseudoaneurysm with US-Guided Thrombin Injection: A Case Report.

We are presenting a case of a patient who developed a pseudoaneurysm following cardiac catheterization. This is one of the most common complications related to invasive cardiovascular procedures. A pseudoaneurysm forms when an arterial puncture site fails to seal, allowing blood to leak and form a pulsatile hematoma contained by fibromuscular tissues. Color Doppler imaging has been the investigative method of choice for this diagnosis, which demonstrates swirling flow in a mass connected to the parent artery in the neck. The pseudoaneurysm neck shows "to and fro" Doppler waveforms. The treatment options for pseudoaneurysms include ultrasound (US)-guided compression, minimally invasive percutaneous treatments including US-guided thrombin injection, coil embolization and covered stent placement, and open surgical treatment. All of these treatment options have their own advantages and disadvantages, which will be discussed in detail.