Thoracic aneurysm rupture due to graft perforation after endovascular stent-grafting via median sternotomy
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Updated: Aug 20, 2026

Modified Octopus Technique for Thoracoabdominal Aortic Aneurysm
Published on: August 1, 2025
Masashi Toyama1, Akihiko Usui, Masaharu Yoshikawa
1Department of Cardio-Thoracic Surgery, Nagoya University Graduate School of Medicine, Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. machapon@med.nagoya-u.ac.jp
Abstract:
We performed emergency repeat surgery for aneurismal rupture due to graft perforation with mechanical stress of the Z stent in a kinking graft after frozen elephant trunk procedure. Graft kinking occurred due to cranial migration of the Z stent. It is important to prevent stent dislodgement in order to achieve long-term durability and reliability in the frozen elephant trunk procedure.
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