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Updated: May 22, 2026

Modified Octopus Technique for Thoracoabdominal Aortic Aneurysm
Published on: August 1, 2025
False aneurysm of ascending aorta due to pericardial mesothelioma
Vladimir Uspenskiy1, Alexei Lavreshin, Alexei Osadchii
1Almazov Federal Heart, Blood and Endocrinology Centre, St. Petersburg, Russian Federation. vladimiruspenskiy@gmail.com
Abstract:
Ascending aortic false aneurysm is a rare but serious complication of pericardial mesothelioma. We report a case of ascending aortic pseudoaneurysm due to spindle cell pericardial mesothelioma. In this case, the first symptoms of the disease appeared 18 months before surgery. The final diagnosis was determined only when severe late complications occurred. Palliative tumour excision, aortoplasty and aortic valve prosthesis were performed with subsequent adjuvant chemotherapy. Over 10 months after surgery, the patient is alive and a significant reduction of the tumour mass has been achieved. This case demonstrates that timely lifetime diagnosis of malignant pericardial tumour remains very difficult and effective adjuvant chemotherapy is needed to improve the results of surgery.
Insights
Ascending aortic pseudoaneurysm, a rare complication of pericardial mesothelioma, poses diagnostic challenges. Early diagnosis and effective adjuvant chemotherapy are crucial for improving patient outcomes in malignant pericardial tumors.
Area of Science:
- Cardiology
- Oncology
- Thoracic Surgery
Background:
- Pericardial mesothelioma is a rare malignancy with potentially severe complications.
- Ascending aortic pseudoaneurysm is an infrequent but serious complication associated with pericardial mesothelioma.
Observation:
- A case of ascending aortic pseudoaneurysm secondary to spindle cell pericardial mesothelioma is presented.
- Initial symptoms appeared 18 months prior to surgical intervention, with diagnosis delayed until severe late complications arose.
Findings:
- The patient underwent palliative tumor excision, aortoplasty, and aortic valve prosthesis placement.
- Adjuvant chemotherapy resulted in a significant reduction of tumor mass.
- The patient remains alive 10 months post-surgery.
Implications:
- Timely lifetime diagnosis of malignant pericardial tumors is exceptionally difficult.
- Effective adjuvant chemotherapy is essential for enhancing surgical outcomes and patient survival.
- This case highlights the need for improved diagnostic strategies and therapeutic approaches for rare pericardial malignancies.
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Thoracic Aorta
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