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It was reported that a patient with a basilar artery tip aneurysm underwent a stent-assisted coil embolization procedure.A subject guidewire positioned the microcatheter in the distal posterior cerebral artery and was then removed.The physician then used the subject guidewire to deliver another microcatheter into the aneurysm sac.However, immediately after the subject guidewire was inserted into the microcatheter, the resistance was encountered and could not be advanced further.Therefore, the subject guidewire was withdrawn, and the distal tip of the subject guidewire was observed to be fractured exactly at the microcatheter hub.Additional information further confirmed that the fractured distal tip of the subject guidewire was within the microcatheter shaft.The microcatheter was removed, and the fractured guidewire segment was successfully retrieved on the table.The subject guidewire was replaced, and the procedure was completed successfully with no reported clinical consequences to the patient.
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