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Percutaneous transluminal angioplasty (PTA) has recently become a noteworthy treatment option for significant stenosis involving the vertebral artery (VA) in selected patients. We conducted a prospective study to evaluate the efficacy, safety and mid-term follow up results of 206 cases received PTA with or without stent implant to treat their symptomatic atherosclerotic VA ste­nosis in all segments (V1-V4). In a prospective mono-arm trial from October 2008 to July 2012 in a single center, 239 lesions affecting the intra or extracranial VA (171 in V1, 17 in V2, 14 in V3, 21 in V4 and 16 in combined segments) were treated by PTA with or without stent implant. Non-disa­bling stroke patients who had failed conservative medical treatment and had angiographic evidence of >50% stenosis in the dominant VA with clinical signs and symptoms of VB stenosis were included in this study. They were mean followed for 13.15±5.24 months after treatment. Overall, 206 patients underwent the procedure. A stent was implemented in 199 patients (96.6%). The periprocedural complication rate was 7.2%. The procedural (technical) success rate was 97.6%. Of the total 239 lesions, 223 were treated with stent implant. Clinical success was achieved in all 206 symptomatic patients after the procedure. Restenosis occurred in 15.9% after a mean 10.8 (6-24) months. Of those, 63.1% and 34.2% had mild and moderate stenosis that was treated medically, whereas one case (2.6%) with severe restenosis underwent balloon angioplasty. No deaths occurred during the follow-up period. The follow-up complication rate was 6.3%. TIA occurred in 4.4%, a minor stroke in 1.4% and a major stroke in one patient. The overall patient event-free survival was 92.4%. These results demonstrate the safety and feasibility of PTA with or without stent implant, with a high technical success rate, a low complication rate, a low restenosis rate and durable clinical success in patients with symptomatic VA stenosis. This approach seems to improve patients' immediate and mid-term clinical results. Randomized controlled trials are necessary to further validate this treat­ment option. [ABSTRACT FROM AUTHOR]

Spontaneous recanalization of the occluded internal carotid artery (ICA) is more frequent than is generally believed. The timing of spontaneous recanalization remains unclear but it may occur as either an early or a late event. The aim of this case report is to emphasize the importance of spontaneous recanalization and its consequences. From September 2008 to November 2010 we prospectively followed patients with old ICA occlusion. The diagnoses of an occlusion were based on duplex scan findings and were confirmed by CT angiography and digital subtraction angiography (DSA). ICA occlusions secondary to dissection, inflammatory process, like fibromuscular dysplasia, previous stenting or endarterectomy and trauma, were excluded from the study. All patients had a scheduled carotid duplex scan every six months. Overall 65 patients were enrolled. Two patients showed evidence of spontaneous recanalization. A 55-year-old man with a known history of transient ischemic attack had occlusion in the left side ICA. He presented with another TIA eight months later. Investigations showed evidence of rcanalization of occluded ICA. This artery underwent uneventful stenting. In another patient recanalization was heralded by global aphasia and right side hemiplegia. He was a 70-year-old man with a history of recurrent TIA. Carotid duplex scan and DSA showed recanalization of the occluded left ICA accompanied by occlusion of the ipsilateral middle cerebral artery. He remained profoundly disabled with severe neurological deficits. In conclusion, spontaneous recanalization of the occluded internal carotid artery is a potentially complicated event that may lead to severe neurological disability. [ABSTRACT FROM AUTHOR]

More than one quarter of all transient ischemic attacks (TIA's) and ischemic strokes involve tissue supplied by the vertebrobasilar (VB) circulation. Vertebral artery stenotic lesion, particularly at the origin of the vertebral artery, is not uncommon but it is a less studied area. Here we present our endovascular treatment experience in a group of patients with vertebral artery orifice stenosis. We enrolled a group of patients with vertebral artery orifice stenosis who presented with confirmed posterior circulation stroke. Vertebrobasilar insufficiency syndrome was confirmed by imaging studies and clinical findings. Vertebral artery stenosis diagnosed by CT or MR Angiography and confirmed by Conventional and digital subtraction angiography (DSA). Angiography was performed by using of femoral or radial artery approach. From October 2008 to January 2010, forty-three consecutive patients (69.8% men) underwent stent placement for symptomatic vertebral artery orifice stenosis. Mean degree of stenosis was 70.45 +/- 7.455 percent and mean age was 71.65 +/- 7.743 years . In the 22 patients (22/43, 51.16%) stenosis were in left side. In the thirty patients (30/43, 69.6%) there was evidence of atherosclerotic disease in the internal carotid artery and in the 23% contra lateral vertebral artery was involved. There were five different cases with left renal artery stenosis especially in the men with left vertebral artery stenosis. Initial technical success rate was 100%. No cerebrovascular complications or embolic events occurred. Six months control angiography follow-up revealed one patient with stent occlusion and moderate (40%) restenosis in the another patient. According to our finding angioplasty and stenting for vertebral artery orifice stenosis is safe and effective. Patients with vertebral artery orifice disease frequently have coexistent atherosclerotic stenosis in the other major extracranial arteries including carotid and renal arteries. [ABSTRACT FROM AUTHOR]