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BackgroundThe impact of a narrow true lumen (NTL) on the outcomes of fenestrated-branched endovascular repair in patients with postdissection thoracoabdominal aortic aneurysms (PD-TAAAs) is underreported.MethodsData from an international, multicenter registry were analyzed, to identify patients treated for PD-TAAAs (2015-2025) at 23 centers. All patients underwent fenestrated-branched endovascular
