Pseudoaneurysm arteria carotis.

A 90-year-old man with type 2 diabetes mellitus, hypertension, and hyperlipidemia was admitted for vascular evaluation due to a progressively enlarging mass on the right side of the neck. Ultrasound examination revealed a pseudoaneurysm at the bifurcation of the right common carotid artery. Clinically, a pulsatile, painless mass measuring 6 × 4 cm was present without overlying skin erythema. CT angiography confirmed the diagnosis of a pseudoaneurysm with a thickened wall and a wide neck. Following a multidisciplinary discussion, the patient was indicated for an endovascular procedure. A stent graft was deployed across the aneurysmal neck, and embolization of the external carotid artery trunk was simultaneously performed via the right common femoral artery. The procedure resulted in complete exclusion of the pseudoaneurysm and regression of the neck mass without any neurological impairment. The etiology of the pseudoaneurysm remained unclear; however, an infectious origin was considered most likely given the positive blood cultures for Staphylococcus aureus and the absence of any prior intervention or trauma to the cervical region.