Brucella-Induced Ruptured Infrarenal Dissecting Abdominal Aortic Aneurysm
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Updated: Jan 19, 2026
Porcine Model of Infrarenal Abdominal Aortic Aneurysm
Published on: November 21, 2019
Harishankar Ramachandran Nair1, Prakash Goura1, Shivanesan Pitchai1
1Department of Vascular and Thoracic Surgery, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Trivandrum, Kerala, India.
Abstract:
Mycotic aneurysms, often saccular, accounting for approximately 2.5% of all abdominal aortic aneurysms, possess increased risk of rupture, uncontrolled sepsis, and protracted hospital stay and are associated with high morbidity and mortality. The authors report the case of a 49-year-old female with no known comorbidities who presented with free rupture of an infrarenal dissecting mycotic aneurysm and underwent emergent open repair successfully. The etiological agent, Brucella melitensis, a Gram-negative zoonotic coccobacillus, is rarely reported to cause mycotic aneurysm.
Insights
This case report details a rare instance of a ruptured infrarenal dissecting mycotic aneurysm caused by Brucella melitensis. Successful emergent open repair was performed, highlighting a critical intervention for this uncommon condition.
Area of Science:
- Vascular Surgery
- Infectious Diseases
- Microbiology
Background:
- Mycotic aneurysms, comprising ~2.5% of abdominal aortic aneurysms, carry high risks of rupture, sepsis, and mortality.
- These aneurysms often present with saccular morphology and are associated with prolonged hospitalization.
Purpose of the Study:
- To report a rare case of a ruptured infrarenal dissecting mycotic aneurysm.
- To identify Brucella melitensis as the causative agent in a patient with no prior comorbidities.
- To describe the successful emergent surgical management of this condition.
Main Methods:
- Case report of a 49-year-old female patient.
- Diagnosis of a free rupture of an infrarenal dissecting mycotic aneurysm.
- Emergent open surgical repair.
Main Results:
- Successful emergent open repair of the ruptured mycotic aneurysm.
- Identification of Brucella melitensis, a rare etiological agent, as the cause.
- Patient had no known comorbidities prior to presentation.
Conclusions:
- Mycotic aneurysms, though rare, necessitate prompt diagnosis and management due to high rupture risk.
- Brucella melitensis is an uncommon but significant pathogen capable of causing mycotic aneurysms.
- Emergent open repair can be a successful treatment strategy for ruptured mycotic aneurysms.
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