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Updated: Jan 27, 2026

Modified Octopus Technique for Thoracoabdominal Aortic Aneurysm
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Modified Octopus Technique for Thoracoabdominal Aortic Aneurysm

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Pseudoaneurysm of the Thoracoabdominal Aortic Graft Due to Intercostal Nerve Block

Joseph M Besho1, Akiko Tanaka1, Hazim J Safi1

  • 1Department of Cardiothoracic and Vascular Surgery, McGovern Medical School at The University of Texas Health Science Center at Houston (UTHealth), Houston, Texas.

The Annals of Thoracic Surgery
|March 16, 2019
PubMed

Pseudoaneurysms of the descending aorta after open graft replacement usually occur in patients with connective tissue disorders and form at anastomotic or cannulation sites. We present a case of an iatrogenic pseudoaneurysm in the descending thoracic aortic graft body caused by intercostal nerve block. The patient had undergone repair for thoracoabdominal aortic aneurysm 4 years prior and underwent a series of intercostal nerve blocks after experiencing persistent postthoracotomy pain. A pseudoaneurysm in the descending thoracic graft, contiguous with the chest wall, was encountered. He underwent successful pseudoaneurysm resection with redo graft replacement, resulting in significant pain relief.

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