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Updated: Jul 3, 2026

Microsurgical Clip Obliteration of Middle Cerebral Aneurysm Using Intraoperative Flow Assessment
Published on: September 25, 2009
[Mycotic aneurysm of the internal carotid artery]
D Kleemann1, S Dinsel, A Radtke
1HNO-Klinik des MediClin-Müritz-Klinikums Waren, Müritz. detlef.kleemann@mueritz-klinikum.de
Abstract:
The detection of aneurysms of the internal carotid artery due to acute or chronic neck infections seems to be a rather rarely event. However, if aneurysms or pseudoaneurysms of the neck region occur, than mostly by bleeding complication or unclear significant soft tissue swelling. The case of a patient is reported, who underwent an abscess tonsillectomy. The intraoperative situation of the right tonsillar fossa was found to show suspicious pulsations under the scarred and inflamed peritonsillar tissue layer. The postoperative performed intraarterial angiography verified the diagnosis of the aneurysm of the internal carotid artery nearby the tonsillar fossa. The diagnosis mycotic aneurysm has been concluded by the long lasting tonsillitis history with one further peritonillar abscess in the past, intraoperative and histological signs of peritonsillitis and the the result of an intraarterial angiography carried through 10 years ago without any clue to aneurysm. A bleeding complication did not occur in this case. The patient went into the care of vascular surgeons with the indication to perform a stent application.
Insights
A rare case of internal carotid artery aneurysm, likely mycotic, was detected after tonsillectomy due to chronic infection. This finding highlights the importance of considering vascular complications in persistent neck infections.
Area of Science:
- Vascular Surgery
- Infectious Diseases
- Head and Neck Surgery
Background:
- Aneurysms of the internal carotid artery (ICA) secondary to neck infections are uncommon.
- Infections can lead to pseudoaneurysms or true aneurysms, often presenting with bleeding or swelling.
Observation:
- A patient undergoing tonsillectomy for abscess presented with pulsatile findings in the tonsillar fossa.
- Intraarterial angiography confirmed an aneurysm of the internal carotid artery adjacent to the tonsillar fossa.
Findings:
- The diagnosis of a mycotic aneurysm was established based on chronic tonsillitis history, previous abscess, peritonsillar inflammation, and a decade-long absence of aneurysm on prior angiography.
- The patient had no bleeding complications.
Implications:
- This case underscores the need for vigilance regarding vascular complications in patients with chronic or recurrent head and neck infections.
- Early detection and management, potentially involving stent application by vascular surgeons, are crucial for preventing severe outcomes.
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