title: Germinoma arising in the basal ganglia in early stage: CT and MR findings.
abstract: We report a patient with a germinoma originating in the left basal ganglia. Unenhanced computed tomography (CT) revealed a relatively well-defined high-density lesion, which was slightly enhanced with contrast medium. No tumor stain was noted on angiography. The mass showed hypointensity on T1-weighted magnetic resonance imaging (MRI), and heterogeneous hyperintensity on T2-weighted imaging. The lesion was homogeneously enhanced after the administration of Gd-DTPA. To our knowledge, the MR findings of basal ganglia germinoma have been retrospectively reviewed in just four reported cases, only two of which were examined with Gd-DTPA enhancement. The two cases revealed relatively large masses with cysts and peritumoral edema, and were slightly enhanced after the intravenous injection of Gd-DTPA. Our case was thought to be in the early stage, and its CT and MR findings were slightly different from those of previously reported cases.
authors.affiliation: Department of Radiology, Nagoya Daini Red Cross Hospital, Japan.
authors.forename: D
authors.initials: D
authors.lastname: Yamana
authors.forename: J
authors.initials: J
authors.lastname: Tohyama
authors.forename: T
authors.initials: T
authors.lastname: Mike
authors.forename: N
authors.initials: N
authors.lastname: Fukaya
authors.forename: M
authors.initials: M
authors.lastname: Okano
authors.forename: M
authors.initials: M
authors.lastname: Mimura
authors.forename: T
authors.initials: T
authors.lastname: Banno
authors.forename: S
authors.initials: S
authors.lastname: Ohba
mesh_terms: D001480:Basal Ganglia Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D001929:Brain Edema / Q000175:diagnosis; D001932:Brain Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D002533:Cerebral Angiography; D002648:Child; D003287:Contrast Media; D003560:Cysts / Q000175:diagnosis; D005682:Gadolinium; D019786:Gadolinium DTPA; D018237:Germinoma / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D007089:Image Enhancement; D008279:Magnetic Resonance Imaging; D008297:Male; D009367:Neoplasm Staging; D009942:Organometallic Compounds; D004369:Pentetic Acid / Q000031:analogs & derivatives; D011856:Radiographic Image Enhancement; D014057:Tomography, X-Ray Computed
chemical_list: D003287:Contrast Media; D009942:Organometallic Compounds; D004369:Pentetic Acid; D005682:Gadolinium; D019786:Gadolinium DTPA