title: Arteriovenous malformation mimicking recurrent medulloblastoma.
abstract: Magnetic resonance imaging (MRI) is becoming the method of choice for evaluation of central nervous system tumors. However, the sensitivity of this modality raises concern that new lesions in patients previously diagnosed with a brain tumor may not necessarily represent recurrent disease. We report a patient previously treated with surgery, radiotherapy, and chemotherapy for a medulloblastoma who developed a new lesion in the floor of the fourth ventricle. Histologic review following excision revealed an arteriovenous malformation.
authors.affiliation: Department of Pediatrics, Duke University Medical Center, Durham, North Carolina 27710.
authors.forename: A
authors.initials: A
authors.lastname: Moghrabi
authors.forename: H S
authors.initials: HS
authors.lastname: Friedman
authors.forename: R
authors.initials: R
authors.lastname: McLendon
authors.forename: B
authors.initials: B
authors.lastname: Hockenberger
authors.forename: R D
authors.initials: RD
authors.lastname: Tien
authors.forename: E C
authors.initials: EC
authors.lastname: Halperin
authors.forename: W J
authors.initials: WJ
authors.lastname: Oakes
mesh_terms: D001932:Brain Neoplasms / Q000175:diagnosis* / Q000209:etiology; D002675:Child, Preschool; D003937:Diagnosis, Differential; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000150:complications / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging; D008297:Male; D008527:Medulloblastoma / Q000175:diagnosis* / Q000209:etiology; D009364:Neoplasm Recurrence, Local / Q000175:diagnosis*; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed