title: Tumefactive cyst with a vascular blush as a late complication after combined embolization and stereotactic radiosurgery treatments for a cerebral arteriovenous malformation.
abstract: Cyst formation is a recognized late complication after stereotactic radiosurgery for cerebral arteriovenous malformations (AVMs). We report on a patient with delayed cyst formation after combined embolization and stereotactic radiosurgery treatments for a cerebral AVM. The true nature of the cyst was complicated by tumefactive magnetic resonance MR imaging characteristics. The tumefactive cyst was associated with an additional imaging finding suggestive of a neoplastic lesion - a 'blush' on conventional angiography.
authors.affiliation: Department of Neurosurgery, The Methodist Hospital, Houston, Texas, USA. mwolak@tmh.tmc.edu
authors.forename: M L
authors.initials: ML
authors.lastname: Wolak
authors.forename: E C
authors.initials: EC
authors.lastname: Murphy
authors.forename: S Z
authors.initials: SZ
authors.lastname: Powell
mesh_terms: D000328:Adult; D001932:Brain Neoplasms / Q000175:diagnosis; D002342:Carotid Artery, External / Q000000981:diagnostic imaging / Q000473:pathology / Q000503:physiopathology; D002533:Cerebral Angiography; D003560:Cysts / Q000209:etiology* / Q000473:pathology / Q000503:physiopathology; D003937:Diagnosis, Differential; D004621:Embolization, Therapeutic / Q000009:adverse effects* / Q000379:methods; D005260:Female; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D008279:Magnetic Resonance Imaging; D008576:Meningeal Arteries / Q000000981:diagnostic imaging / Q000473:pathology / Q000503:physiopathology; D009389:Neovascularization, Pathologic / Q000209:etiology / Q000473:pathology / Q000503:physiopathology; D019635:Neurosurgical Procedures; D009778:Occipital Lobe / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D011183:Postoperative Complications / Q000209:etiology* / Q000473:pathology / Q000503:physiopathology; D016634:Radiosurgery / Q000009:adverse effects* / Q000379:methods; D012086:Reoperation; D055502:Secondary Prevention; D016896:Treatment Outcome