title: Unusual presentation of sarcoidosis: solitary intracranial mass lesion mimicking a glioma.
abstract: We present a patient with sarcoidosis with an isolated intraparenchymal mass lesion that was similar to a glioma on magnetic resonance imaging. On fluid-attenuated inversion recovery images, a small hyperintense signal change in the right uncus was observed. Three months later, enlargement of the abnormal signal lesion was observed. An initial diagnosis of glioma was made. A biopsy of the temporal lobe tumor was done. On histology, a noncaseating granulomatous inflammation consistent with neurosarcoidosis was diagnosed. Albeit rarely, we should consider the possibility of neurosarcoidosis in the differential diagnosis of isolated intraparenchymal mass lesion, when the mass is located beside the pia mater.
authors.affiliation: Department of Neurology, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan.
authors.forename: Akinori
authors.initials: A
authors.lastname: Uruha
authors.forename: Reiji
authors.initials: R
authors.lastname: Koide
authors.forename: Makoto
authors.initials: M
authors.lastname: Taniguchi
mesh_terms: D001932:Brain Neoplasms / Q000175:diagnosis; D002493:Central Nervous System Diseases / Q000175:diagnosis; D003287:Contrast Media; D003937:Diagnosis, Differential; D005260:Female; D005910:Glioma / Q000175:diagnosis; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008875:Middle Aged; D012507:Sarcoidosis / Q000175:diagnosis
chemical_list: D003287:Contrast Media