American Journal of Neuroradiology, Vol 19, Issue 3 502-504, Copyright © 1998 by American Society of Neuroradiology
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Pseudoaneurysm of the petrous internal carotid artery after skull base infection and prevertebral abscess drainage
H Tanaka, U Patel, DA Shrier and JU Coniglio
Department of Radiology, University of Rochester Medical Center, NY, USA.
A 37-year-old woman with a skull base infection sustained massive oropharyngeal bleeding after incisional nasopharyngeal biopsy and drainage of a prevertebral abscess. A pseudoaneurysm originating at the petrous portion of the internal carotid artery was initially misinterpreted on MR images as typical postoperative change within a resolving abscess cavity. Follow-up MR imaging and conventional angiography ultimately disclosed the pseudoaneurysm.
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