Related Experiment Video
Updated: May 28, 2026

Modified Octopus Technique for Thoracoabdominal Aortic Aneurysm
Published on: August 1, 2025
Airway obstruction by an aortic false aneurysm.
S Taillandier1, A Guillon, O Favelle
1Service de réanimation médicale, université F.-Rabelais Tours, hôpital Bretonneau, CHU de Tours, 2, boulevard Tonnellé, 37044 Tours cedex 9, France.
Aortic false aneurysms are rare but serious complications after cardiac surgery. This case highlights how CT scans can misdiagnose these aneurysms as tumors, potentially delaying critical treatment.
Area of Science:
- Cardiovascular Surgery
- Diagnostic Imaging
- Thoracic Surgery
Background:
- Aortic false aneurysms are uncommon complications following aortic valve replacement and other cardiac surgeries.
- These aneurysms can manifest as mediastinal masses, posing diagnostic challenges.
Observation:
- A 60-year-old woman with a history of aortic valve replacement presented with progressive dyspnea and cough.
- A contrast-enhanced CT scan revealed a large anterior mediastinal mass, initially suspected to be a tumor due to lack of contrast enhancement.
Findings:
- The mediastinal mass was ultimately diagnosed as an aortic false aneurysm.
- The narrow communication with the aorta prevented contrast filling during CT imaging, leading to misdiagnosis.
Implications:
- This case underscores the importance of considering aortic false aneurysms in patients with a cardiac surgery history presenting with mediastinal masses.
- Accurate and timely diagnosis is crucial to prevent potentially catastrophic outcomes, emphasizing the limitations of contrast-enhanced CT in specific scenarios.
Related Concept Videos
Aneurysm I: Introduction
Aneurysm II: Clinical Manifestations and Diagnostic Studies
Aneurysm III: Interprofessional Care
Aortic Regurgitation I: Introduction
Aortic Regurgitation II: Clinical Features and Diagnostic Tests
Aortic Regurgitation III: Medical Management

