Abstract 16927: The Mother of All Pseudoaneurysms - A Rare Case

Abstract

Introduction: Femoral artery pseudoaneurysms (FAP) are typically caused by percutaneous access during coronary and peripheral angiography. It occurs in 0.1 to 0.2% of diagnostic catheterization procedures and in 3.5% to 5.5% of interventional procedures. Cases of “Giant” femoral artery pseudoaneurysms have seldom documented in the past, however, our case is unique for two reasons:- Pseudoaneurysm presented 6 months after femoral arterial access, which is unusual.- This size of pseudo-aneurysm has yet to be documented. Case Description: 74-year-old male with history of diabetes mellitus type II and tobacco abuse presented with chest pain. He underwent cardiac catheterization via radial access, which confirmed severe multi-vessel disease with ejection fraction of 30%. Patient was started on goal-directed medical therapy with planned elective IABP-assisted coronary artery bypass grafting (CABG). On the day of surgery in anticipation of IABP, right femoral artery was accessed, however, intra-operative transesophageal echocardiography showed improvement of ejection fraction to 55%, which led to removal of the femoral sheath and application of a closure device. Six months later, patient presented with a large right groin mass. Computed tomography angiography confirmed a pseudoaneurysm anterior to the right common femoral artery, measuring 9.6 cm x 9.8 cm causing moderate stenosis of the superficial femoral artery. Peripheral arterial duplex ascertained the neck of pseudoaneurysm measuring 1.3 cm. Patient underwent emergent repair of the right femoral pseudoaneurysm, with thrombus removal. No further recurrence of pseudoaneurysm was noted. Discussion: Pseudoaneurysms may arise months after femoral arterial access. Any groin symptoms in patients who underwent percutaneous femoral arterial access warrant additional investigation. Further studies are needed to elucidate the factors that increase the risk of formation and rupture of pseudoaneurysms