A valiant navion stent graft was implanted in a patient for the endovascular treatment of a 260 mm thoracic aortic dissection.It was reported during a follow-up, approximately 09 months post index procedure, it was noted that a dissection continues beyond the stent graft, distal to the existing device.It was stated that a valiant navion extension was implanted to treat the event on the next day.As per the physician the cause of the event can not be determined.No additional clinical sequalae were reported and the patient is fine.
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