• Thomas Raphael Meinel, Frauke Pult, Jan Gralla, Marcel Arnold, Claudio Bassetti, and Simon Jung.
• 1 Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
• Interv Neuroradiol. 2019 Feb 1; 25 (1): 44-46.

AbstractA 76-year-old man with a history of arterial hypertension, obstructive sleep apnea, dyslipidemia, family history of cardiovascular events, prestroke and overweight presented 90 minutes after acute onset of right-sided sensorimotor hemiparesis, hemiataxia and dysarthria (National Institutes of Health Stroke Scale (NIHSS) 9/42). Magnetic resonance imaging (MRI) revealed a pontine ischemia and MR angiography showed a thrombus in the middle to distal portion of the basilar artery. Owing to the location, an occlusion of one lumen of a fenestrated basilar artery was suspected. Fearing the risk of peripheral dislocation, intravenous thrombolysis was withheld after an interdisciplinary discussion and direct endovascular thrombectomy (Solitaire stent retriever) was successfully performed by passing the stent retriever specifically through the affected lumen and between the thrombus and the vascular wall, which would normally be avoided. Angiography after complete reperfusion (Thrombolysis in Cerebral Infarction grade 3) confirmed a fenestration in the middle to distal portion of the basilar artery where the thrombus was initially located (blue and green arrow). Follow-up MRI after 24 hours showed only minimal ischemic damage in the left pontine area, and the patient was discharged home with ambulatory physiotherapy for residual minimal gait disturbance (NIHSS 0).

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