BeFlared Versus VBX for FEVAR

This randomized controlled unblinded trial aimes to compare BeFlared FEVAR Stent Graft System (BeFlared) with GORE® VIABAHN® VBX Balloon Expandable Endoprothesis (VBX) in patients undergoing endovascular aneurysm repair with fenestrated device (FEVAR). Primary objectives: * compare cumulative device time between patients undergoing FEVAR with BeFlared and VBX brindging device; * compare target vessel (TV) instability at early, short-term and midterm follow-up in patients undergoing FEVAR with BeFlared and VBX brindging device. Secondary objectives: \- compare intraoperative TV technical success in patients undergoing FEVAR with BeFlared and VBX bridging device.