Crossed cerebellar glucose hypermetabolism demonstrated using PET in symptomatic epilepsy--case report.
A 65-year-old male with an old cerebral contusion in the frontal lobes had suffered from status complex partial seizures. Ictal positron emission tomography with an F-18 fluorodeoxyglucose ([18F]FDG-PET) scan revealed hypermetabolism in the frontal, temporal and parietal lobes and the contralateral cerebellar hemisphere. The patient underwent a next-day PET scan with the 15O-labeled gas inhalation technique, which showed mild hyperperfusion and oxygen hypermetabolism in these areas. An interictal [18F]FDG-PET scan 17 days after the initial epilepsy demonstrated glucose hypometabolism of the frontal, temporal and parietal lobes and the contralateral cerebellar hemisphere. Increased glucose metabolism on the interictal PET scan and decreased glucose metabolism on an interictal PET scan in the epileptogenic supratentorial zones and the contralateral cerebellar hemisphere are interesting observations for understanding the pathophysiology in long-standing partial seizures.
Kawai
Nobuyuki
N
Department of Neurological Surgery, Kagawa University School of Medicine, Japan. nobu@kms.ac.jp
Kawanishi
Masahiko
M
Tamiya
Takashi
T
Nagao
Seigo
S
D000368:Aged; D001930:Brain Injuries / Q000150:complications; D002531:Cerebellum / Q000000981:diagnostic imaging* / Q000378:metabolism; D002540:Cerebral Cortex / Q000000981:diagnostic imaging* / Q000378:metabolism; D004827:Epilepsy / Q000000981:diagnostic imaging* / Q000209:etiology / Q000378:metabolism; D019788:Fluorodeoxyglucose F18 / Q000493:pharmacokinetics; D005947:Glucose / Q000378:metabolism; D044882:Glucose Metabolism Disorders / Q000000981:diagnostic imaging* / Q000209:etiology / Q000378:metabolism; D006801:Humans; D008297:Male; D049268:Positron-Emission Tomography / Q000379:methods; D019275:Radiopharmaceuticals / Q000493:pharmacokinetics
D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18; D005947:Glucose