title: Pseudoaneurysm of the petrous internal carotid artery after skull base infection and prevertebral abscess drainage.
abstract: 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.
authors.affiliation: Department of Radiology, University of Rochester Medical Center, NY, USA.
authors.forename: H
authors.initials: H
authors.lastname: Tanaka
authors.forename: U
authors.initials: U
authors.lastname: Patel
authors.forename: D A
authors.initials: DA
authors.lastname: Shrier
authors.forename: J U
authors.initials: JU
authors.lastname: Coniglio
mesh_terms: D000038:Abscess / Q000382:microbiology / Q000601:surgery*; D000328:Adult; D017541:Aneurysm, False / Q000175:diagnosis / Q000209:etiology*; D001847:Bone Diseases / Q000382:microbiology / Q000601:surgery; D002340:Carotid Artery Diseases / Q000175:diagnosis / Q000209:etiology*; D002343:Carotid Artery, Internal / Q000473:pathology; D002533:Cerebral Angiography; D004322:Drainage; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D011183:Postoperative Complications; D011550:Pseudomonas aeruginosa / Q000302:isolation & purification; D012886:Skull; D019291:Skull Base