Related Experiment Video
Updated: Jul 12, 2026

Microsurgical Clip Obliteration of Middle Cerebral Aneurysm Using Intraoperative Flow Assessment
Published on: September 25, 2009
Mycotic aneurysm of the internal carotid artery presenting with multiple cerebral septic emboli
Spyros Papadoulas1, Petros Zampakis, Alexandros Liamis
1Department of Surgery, Vascular Surgery Unit, University Hospital of Patras, Patras, Greece.
Abstract:
Mycotic aneurysms of the extracranial carotid artery are uncommon and always warrant surgical treatment to prevent eventual rupture and death. Septic embolization to the brain is an even rarer complication of these aneurysms. We present a case of a 79-year-old male with an extracranial internal carotid artery mycotic aneurysm during Staphylococcus aureus bacteremia. He presented with hemiparesis owing to brain embolism from multiple septic emboli originating from the aneurysm. Multidetector computed tomographic angiography contributed to the diagnosis. Resection of the aneurysm and restoration of arterial supply to the brain by vein graft interpositioning was the therapeutic procedure along with long-term antibiotic treatment. A high index of suspicion is required for the diagnosis of a mycotic carotid aneurysm and aggressive treatment is always needed to prevent lethal complications.
Insights
Mycotic aneurysms of the extracranial carotid artery are rare but dangerous. Prompt surgical intervention and antibiotics are crucial to prevent severe complications like brain embolism and death.
Area of Science:
- Vascular Surgery
- Infectious Diseases
- Neurology
Background:
- Mycotic aneurysms of the extracranial carotid artery are uncommon vascular lesions.
- Rupture and death are common outcomes if left untreated.
- Septic embolization to the brain is a rare but devastating complication.
Observation:
- A 79-year-old male presented with hemiparesis due to brain embolism.
- The cause was identified as an extracranial internal carotid artery mycotic aneurysm.
- Staphylococcus aureus bacteremia was present concurrently.
Findings:
- Multidetector computed tomographic angiography facilitated diagnosis.
- Surgical resection of the mycotic aneurysm was performed.
- Arterial supply to the brain was restored using vein graft interpositioning.
- Long-term antibiotic treatment was administered.
Implications:
- A high index of suspicion is necessary for diagnosing mycotic carotid aneurysms.
- Aggressive surgical and medical management is essential.
- Timely intervention can prevent fatal complications such as rupture and stroke.
Related Concept Videos
Brain Abscess l: Introduction
The Arch of Aorta
Encircling the heart, the coronary arteries form a ring-like structure before...
Cryptococcal Meningitis
Cerebral Edema ll: Pathophysiology
Arteries of the Head and Neck
The internal carotid arteries supply blood to the anterior portion of the cerebrum. They enter the...
Bacterial Meningitis II: Pathophysiology
