Inclusion Criteria:  - asymptomatic carotid artery stenosis (according to the ESVS guidelines) >60% (NASCET criteria) with a physical examination and a DUS at the S. Orsola Malpighi hospital from 2019 to 2025.  Exclusion Criteria:  Patients submitted to carotid revascularization will be included until the revascularization. Patients who underwent a transient ischemic attach or a stroke within the 6-months before the enrollment are excluded from the study Restenosis Carotid total occlusion