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Updated: Jul 17, 2026

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Modified Octopus Technique for Thoracoabdominal Aortic Aneurysm
Published on: August 1, 2025
Hydatid cyst involving the aortic arch.
Anil Z Apaydin1, Emrah Oguz, Mehdi Zoghi
1Department of Cardiovascular Surgery, Ege University Medical School Hospital, Izmir 35100, Turkey. anil.apaydin@ege.edu.tr
Summary
This study details a rare mediastinal hydatid cyst invading the aorta, presenting as a cranial mass. Surgical aortic replacement was successful, highlighting graft interposition as the preferred treatment.
Area of Science:
- Cardiovascular Surgery
- Parasitology
- Thoracic Oncology
Background:
- Hydatid cysts, caused by Echinococcus granulosus, typically affect the liver and lungs.
- Primary mediastinal hydatid cysts are exceptionally rare.
- Aortic wall involvement by hydatid cysts is highly unusual.
Observation:
- A patient presented with a cranial mass, later identified as a primary mediastinal hydatid cyst.
- The cyst invaded the ascending aorta and aortic arch.
- This represents the first reported case of a hydatid cyst within the aortic arch lumen.
Findings:
- The patient underwent ascending aortic and hemiarch replacement using hypothermic circulatory arrest.
- Complete removal of the hydatid cyst was achieved.
- The patient experienced an uneventful recovery and is under regular follow-up.
Implications:
- This case underscores the potential for hydatid cysts to manifest in rare locations, including the cardiovascular system.
- Surgical management of aortic hydatid cysts requires careful consideration.
- Graft interposition is suggested as the optimal surgical approach over patch repair for aortic hydatid cyst resection.
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