title: Intravascular papillary endothelial hyperplasia in an intracranial thrombosed aneurysm: 3T magnetic resonance imaging and angiographical features.
abstract: Enhancement of intracranial thrombosed aneurysms is an uncommon finding on magnetic resonance (MR) imaging, and can present diagnostic difficulties and complicate management decisions. We report a 46-year-old man who had an enhancing thrombosed intracranial aneurysm observed on 3T MR imaging. There was angiographical correlation, with follow-up serial MR imaging documenting regression and improvement. Findings are typical for benign intravascular papillary endothelial hyperplasia. Differential diagnoses of giant serpentine intracranial aneurysm and malignant angiosarcoma are discussed.
authors.affiliation: Department of Neuroradiology, National Neuroscience Institute, 11 Jalan Tan Tock Seng, Singapore 308433. wickly_lee@ttsh.com.sg
authors.forename: W
authors.initials: W
authors.lastname: Lee
authors.forename: F
authors.initials: F
authors.lastname: Hui
authors.forename: Y Y
authors.initials: YY
authors.lastname: Sitoh
mesh_terms: D015901:Angiography, Digital Subtraction; D002533:Cerebral Angiography; D004730:Endothelium, Vascular / Q000473:pathology*; D005500:Follow-Up Studies; D006801:Humans; D006965:Hyperplasia; D021621:Imaging, Three-Dimensional; D002532:Intracranial Aneurysm / Q000175:diagnosis* / Q000473:pathology; D020767:Intracranial Thrombosis / Q000175:diagnosis* / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged