title: MR imaging findings of neurosarcoidosis of the gasserian ganglion: an unusual presentation.
abstract: We report the MR imaging findings of an unusual case of neurosarcoidosis of the gasserian ganglion associated with trigeminal neuralgia. No other neurological or extraneurological localization was found. Magnetic resonance imaging demonstrated a mass in the Meckel's diverticulum that was isointense on T1-weighted images and hypointense on T2-weighted images. Gadolinium-enhanced MR imaging showed heterogeneous enhancement. Although rare, sarcoid infiltration of the gasserian ganglion must be considered in the differential diagnosis of an isolated mass in this localization in patients with trigeminal neuralgia.
authors.affiliation: Unidad de Resonancia Magnetica (MEDTEC), Hospital Xeral-Cíes, 36204 Vigo, Spain. aiglesias64@hotmail.com
authors.forename: Mercedes
authors.initials: M
authors.lastname: Arias
authors.forename: Alfonso
authors.initials: A
authors.lastname: Iglesias
authors.forename: Oscar
authors.initials: O
authors.lastname: Vila
authors.forename: Jose
authors.initials: J
authors.lastname: Brasa
authors.forename: Cesareo
authors.initials: C
authors.lastname: Conde
mesh_terms: D000328:Adult; D002493:Central Nervous System Diseases / Q000150:complications / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D012507:Sarcoidosis / Q000150:complications / Q000175:diagnosis*; D012668:Trigeminal Ganglion / Q000473:pathology*; D014277:Trigeminal Neuralgia / Q000209:etiology*