The management and treatment of a spontaneous carotid aneurysm using a minimally invasive endovascular technique is a rare procedure. We present the case of a 61-year-old man with a history of cerebrovascular events and aneurysmal dilatation of the left internal carotid artery (ICAI) in its C1 portion measuring 14.33mm X 10.79mm with a neck of 11.67mm on the posterior wall. Management is required. endovascular percutaneous use of the standard technique and placement of a 8mm x 40mm micromesh stent (CGUARD) using the FilterWire Ez 3.5x5.5mm x 190cm protection system in the C2 segment for greater safety, covering the neck and achieving immediate exclusion of the aneurysm carotid artery, follow-up one month after the procedure confirmed closure, carotid patency and resolution of symptoms, concluding that micromesh stent placement is an effective option for defect exclusion and low complications.

Edgar Cardenas is a vascular and endovascular surgeon, from the Pontifical Catholic University of Ecuador, work at the Carlos Andrade Marin Specialty Hospital in the city of Quito, publications in international and national journals