Poorthuis MHF, Brand EC, Halliday A, et al. - The reported correlation between operator specialization and procedural outcomes after carotid endarterectomy (CEA) or carotid artery stenting (CAS) was assessed in order to determine if CEA and CAS should be performed by specific specialties. Systematically searching PubMed and Embase up to August 21, 2017, researchers identified 35 studies (26 providing data on CEA, 8 providing data on CAS, and 1 providing data on both CEA and CAS) as eligible for inclusion. For CEA, they identified reduced risk of procedural stroke or death for operations performed by vascular surgeons vs neurosurgeons and general surgeons. They identified n raised risk of procedural stroke or death for operations performed by neurosurgeons vs cardiothoracic surgeons. The analysis suggests a high risk of bias in studies mainly because of potential confounding by patient selection for CEA and CAS. Insufficient evidence was gained to restrict CEA or CAS to specific specialties.