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Updated: Aug 10, 2026

Modified Octopus Technique for Thoracoabdominal Aortic Aneurysm
Published on: August 1, 2025
Ruptured mycotic pseudoaneurysm of the thoracic aorta
Michael Froeschl1, Allan Wolfsohn, Luc M Beauchesne
1Division of Cardiology, University of Ottawa Heart Institute, Canada.
Abstract:
A 68-year-old man being treated for a Staphylococcus aureus bacteremia developed hemoptysis. A transesophageal echocardiogram (TEE) and computed tomographic (CT) scan showed a large descending thoracic aorta pseudoaneurysm. The patient died before surgical intervention could be performed. Pathological examination revealed the presence of a saccular pseudoaneurysm originating from a mural defect at the site of an ulcerated atherosclerotic plaque. There was rupture into the mediastinum with contained hematoma. Microscopic examination documented numerous Gram-positive bacterial cocci at the rupture site.
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