Concurrent stenoses: A common etiology of stroke in Asians

Figure 1 Cumulative event-free survival in patients with different intracranial and extracranial lesions. Concurrent (< 70%): Concurrent lesions with < 70% extracranial stenosis; Concurrent (> 70%): Concurrent lesions with > 70% extracranial stenosis; Extracranial only: Extracranial stenosis only; Intracranial only: Intracranial stenosis only; Normal: Normal craniocervical vasculature.