A brupt intracranial large-vessel occlusion is associated with poor functional outcomes and a high mortality rate. The only possible solution is restoration of flow as soon as possible within a limited therapeutic time window. 1,13,18 Among these large vessel occlusions, the internal carotid artery (ICA) terminus occlusion is extremely difficult to manage.Acute ICA terminus occlusion responds poorly to intravenous administration of tissue plasminogen activator (tPA) due to its high clot burden; the recanalization rate is 4.4% in response to intravenous tPA alone and is 43.5% in response to intravenous tPA followed by additional endovascular treatment.1 Although new endovascular devices have accomplished better outcomes, the recanalization aBBReViatioNS ACoA = anterior communicating artery; CEA = carotid endarterectomy; DWI = diffusion-weighted imaging; ICA = internal carotid artery; MCA = middle cerebral artery; MRA = magnetic resonance angiography; mRS = modified Rankin Scale; NIHSS = National Institutes of Health Stroke Scale; PCoA = posterior communicating artery; TIMI = Thrombolysis In Myocardial Infarction; tPA = tissue plasminogen activator. SuBmitted December 25, 2013. accepted November 13, 2014. iNclude wheN citiNg Published online January 9, 2015; DOI: 10.3171/2014.11.JNS132855. diScloSuRe The authors report no conflict of interest concerning the materials or methods used in this study or the findings specified in this paper.Emergent intracranial surgical embolectomy in conjunction with carotid endarterectomy for acute internal carotid artery terminus embolic occlusion and tandem occlusion of the cervical carotid artery due to plaque rupture hirotaka hasegawa, md, tomohiro inoue, md, akira tamura, md, phd, and isamu Saito, md, phd Department of Neurosurgery, Fuji Brain Institute and Hospital, Shizuoka, Japan Acute internal carotid artery (ICA) terminus occlusion is associated with extremely poor functional outcomes or mortality, especially when it is caused by plaque rupture of the cervical ICA with engrafted thrombus that elongates and extends into the ICA terminus. The goal of this study was to evaluate the efficacy and safety of surgical embolectomy in conjunction with carotid endarterectomy (CEA) for acute ICA terminus occlusion associated with cervical plaque rupture resulting in tandem occlusion. A retrospective review of medical records was performed. Clinical and radiographic characteristics were evaluated, including details of surgical technique, recanalization grade, recanalization time, complications, modified Rankin Scale (mRS) score at 3 months, and National Institutes of Health Stroke Scale (NIHSS) score improvement at 1 month. Three patients (mean age 77.3 years; median presenting NIHSS Score 22, range 19-26) presented with abrupt tandem occlusion of the cervical ICA and ICA terminus and were selected for surgery after confirmation of embolic high-density signal at the ICA terminus on CT and diffusion-weighted imaging (DWI)/magnetic resonance angiography (MRA) mismatch. All patients under...