Aberrant internal carotid artery lying within the middle ear. High resolution CT diagnosis and differential diagnosis

Area of Science:

• Radiology
• Otolaryngology
• Vascular Anatomy

Background:

• Aberrant course of the internal carotid artery (ICA) is a rare vascular anomaly.
• Accurate diagnosis is crucial for surgical planning and avoiding complications.
• Differential diagnosis with other common temporal bone pathologies is essential.

Purpose of the Study:

• To present the computed tomography (CT) imaging features of aberrant internal carotid artery (ICA) course.
• To differentiate the CT findings of aberrant ICA from anomalously high jugular bulb, glomus tympanicum, and cholesterol granuloma.

Main Methods:

• Review of CT scans demonstrating aberrant ICA.
• Comparison of imaging characteristics with other pathologies.
• Emphasis on key CT signs for differentiation.

Main Results:

• Specific CT signs indicative of aberrant ICA course are detailed.
• Distinguishing features between aberrant ICA and high jugular bulb, glomus tympanicum, and cholesterol granuloma are highlighted.
• CT provides reliable visualization for differentiating these entities.

Conclusions:

• CT is effective in identifying and characterizing aberrant internal carotid artery (ICA) course.
• Understanding the distinct CT signs aids in differentiating aberrant ICA from other jugular bulb and middle ear pathologies.
• Accurate radiological assessment is vital for patient management.