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AJNR - American Journal of Neuroradiology

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Bilateral Petrous Internal Carotid Artery Pseudoaneurysms Presenting with Sensorineural Hearing Loss

Catherine J. Hwang^a, Gul Moonis^b, Robert W. Hurst^b, Neil Hockstein^c and Douglas Bigelow^c

^a School of Medicine, University of Pennsylvania Medical Center, Philadelphia, PA
^b Department of Radiology, University of Pennsylvania Medical Center, Philadelphia, PA
^c Department of Otorhinolaryngology, University of Pennsylvania Medical Center, Philadelphia, PA

View larger version (99K): [in a new window]   FIG 1. Axial (A) and coronal (B) CT images acquired through the temporal bone demonstrate an erosive lesion involving the right petrous carotid canal posteromedially with erosion into the cochlea (black arrowhead). The horizontal petrous carotid canal is indicated by the white arrow. Similar changes were seen on the left.

View larger version (73K): [in a new window]   FIG 2. Images from right (A) and left (B) common carotid artery injections demonstrate bilateral aneurysms of the horizontal petrous carotid arteries (black arrowhead).