Related Experiment Video
Updated: Jun 28, 2026
Time-Resolved, Dynamic Computed Tomography Angiography for Characterization of Aortic Endoleaks and Treatment Guidance via 2D-3D Fusion-Imaging
Published on: December 9, 2021
Treatment of a Type II Endoleak from an Atypical Mediastinal Collateral Branch Following Total Arch Replacement with
Emiko Chiba1, Kohei Hamamoto1, Mamoru Arakawa2
1Department of Radiology, Jichi Medical University, Shimotsuke, Tochigi, Japan.
Abstract:
We present a rare case of type II endoleak (T2EL) from an atypical mediastinal artery following total arch replacement with a frozen elephant trunk (FET) for chronic aortic dissection. A 63-year-old male with a history of multiple thoracic aortic surgeries, including FET, developed enlargement of an aortic arch aneurysm on follow-up. Computed tomography and diagnostic angiography revealed a T2EL due to a newly developed mediastinal collateral artery arising from the left subclavian artery feeding the sac. Selective transcatheter embolization with N-butyl-2-cyanoacrylate successfully eliminated the endoleak. Recognizing such atypical T2EL sources is crucial for managing post-FET aneurysm expansion.
