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A misdiagnosed aneurysm of the petrous internal carotid artery: A case report

Nada Alouda1, Nouf H Alshammari2, Khalid Suwayyid Alomar3

  • 1Department of Otolaryngology-Head & Neck Surgery, King Saud University Medical City, College of Medicine, King Saud University, Riyadh, Saudi Arabia.

International Journal of Surgery Case Reports
|August 27, 2023
PubMed
Abstract

Insights

Rare petrous internal carotid artery (ICA) aneurysms can be misdiagnosed. High suspicion and CT angiography are crucial for accurate diagnosis and timely treatment to improve outcomes.

Area of Science:

  • Vascular Neurology
  • Interventional Radiology
  • Diagnostic Imaging

Background:

  • Aneurysms involve arterial wall weakening, forming a blood-filled bulge.
  • Petrous internal carotid artery (ICA) aneurysms are rare, often found incidentally.
  • This case highlights diagnostic challenges and mortality risks associated with petrous ICA aneurysms.

Observation:

  • A 60-year-old woman with comorbidities presented with chronic ear symptoms.
  • Initial imaging suggested a glomus jugulare tumor, leading to misdiagnosis.
  • Computed tomography (CT) angiography ultimately identified an ICA aneurysm in the petrous segment.

Findings:

  • Petrous ICA aneurysms present with varied clinical manifestations, often mimicking other conditions.
  • CT angiography is the gold standard for diagnosing these rare aneurysms.
  • The patient received successful endovascular treatment for the aneurysm.

Implications:

  • Accurate diagnosis of petrous ICA aneurysms requires a high index of suspicion and advanced imaging.
  • Prompt diagnosis and case-specific management, including endovascular techniques, lead to favorable neurological outcomes.
  • Understanding differential diagnoses is critical for managing these rare vascular lesions.
Keywords:
AneurysmCase reportInternal carotid arteryPetrous aneurysmPetrous temporal bone

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