Carotid stump syndrome (CSS) is a rare cause of recurrent ipsilateral cerebrovascular events that typically manifests as transient ischemic attacks or amaurosis fugax. The cause of these recurrent symptoms is thought to be microembolization from an occluded internal carotid artery that reaches intracranial circulation through anastomoses. We undertook a systematic literature review according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines using the PubMed, Web of Science, and Embase databases of the endovascular treatment options for CSS. Nine papers met the inclusion criteria and provided patient data on 12 patients, and one case illustration is presented. Treatment was with common carotid artery-external carotid artery stent graft without concomitant coil embolization in nine patients and with coil embolization without stenting, the breakthrough of the stump with a wire and subsequent internal carotid artery stent placement, and stent-assisted coil embolization in one patient each. During a median follow-up of six months, all patients were on dual antiplatelet therapy except one on undefined "systemic anticoagulation." Twelve patients had no symptoms after treatment, one had transient expressive aphasia but no further symptoms after being placed on anticoagulation, and none had intraprocedural complications or had to undergo retreatment. Our review indicates that endovascular treatment of CSS is associated with low intraprocedural risk and is effective at treating recurrent symptoms.
We report the use of the AngioGard system in the treatment of acute, late in-stent occlusion of the circumflex coronary artery. This case shows that late stent occlusion can in part be due to in-stent thrombosis and the use of an embolization protection device should be considered in this context.
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