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Lesion/approach-related high-risk criteria
| CEA-related |
| Significant contralateral carotid disease |
| Restenosis after carotid endarterectomy |
| Prior neck surgery or irradiation |
| High lesion behind mandible or low lesion that would require thoracic exposure |
| CAS-related |
| Aortic arch type II or III |
| Bovine aortic arch |
| Aortic arch calcification |
| Severe calcification or ulceration at the level of the lesion |
| Ostial lesions |
| Long lesions (> 15 mm) |
| Need for predilation |
