title: PET-fluorodeoxyglucose of cranial and spinal neuromas.
abstract: Five patients with eighth nerve, one with ninth nerve and one with cervical neuromas were studied with PET and [18F] fluorodeoxyglucose (FDG). Four of the patients had had surgery prior to the PET study, and six patients had subsequent surgery. All tumors were well-visualized on the PET images. Only one patient with bilateral acoustic neuroma exhibited tumor recurrence or growth after the PET study; these two lesions showed the highest FDG uptakes in the PET studies (tumor-to-cerebellum ratio of 0.93-0.98). All other tumors were relatively hypometabolic (tumor-cerebellum ratios of 0.43-0.65) and showed no tumor growth or recurrence during follow-up periods ranging from 5 to 8 yr. These results suggest that PET-FDG may be of value in the evaluation of cranial and spinal schwannomas.
authors.affiliation: Neuroimaging Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland 20892.
authors.forename: K
authors.initials: K
authors.lastname: Borbely
authors.forename: M J
authors.initials: MJ
authors.lastname: Fulham
authors.forename: R A
authors.initials: RA
authors.lastname: Brooks
authors.forename: G
authors.initials: G
authors.lastname: Di Chiro
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003390:Cranial Nerve Neoplasms / Q000000981:diagnostic imaging*; D003847:Deoxyglucose / Q000031:analogs & derivatives*; D005260:Female; D019788:Fluorodeoxyglucose F18; D006801:Humans; D008297:Male; D008875:Middle Aged; D009463:Neuroma / Q000000981:diagnostic imaging*; D009464:Neuroma, Acoustic / Q000000981:diagnostic imaging*; D010524:Peripheral Nervous System Neoplasms / Q000000981:diagnostic imaging*; D012189:Retrospective Studies; D013127:Spinal Nerves; D014055:Tomography, Emission-Computed
chemical_list: D019788:Fluorodeoxyglucose F18; D003847:Deoxyglucose