Epilepsy and variation in the frontal lobe artery.
A patient with a rare variation of fronto-orbital artery (FOA) that developed generalized tonic and clonic seizures is reported. The epilepsy focus was in her left frontal region, where blood was supplied by the contralateral fronto-orbital artery. The region was vulnerable to ischemic changes due to a decrease in blood CO2 gas caused by an increase in endogenous progesterone in the luteal period. The anomaly illustrates an important mechanism of ischemia in epilepsy.
Maruyama
Nobuyuki
N
Department of Neurosurgery, Shimane University School of Medicine, 89-1 Enya-cho, Izumo, Shimane 693-8501, Japan. nogeka@med.shimane-u.ac.jp
Fukuma
Atsushi
A
Ihara
Ikuo
I
Ando
Seiichi
S
Moritake
Kouzo
K
D000328:Adult; D020771:Anterior Cerebral Artery / Q000473:pathology*; D001165:Arteriovenous Malformations / Q000150:complications / Q000532:radiotherapy; D001784:Blood Gas Analysis / Q000379:methods; D002245:Carbon Dioxide / Q000097:blood; D002533:Cerebral Angiography / Q000379:methods; D004569:Electroencephalography / Q000379:methods; D017034:Epilepsy, Frontal Lobe / Q000209:etiology / Q000473:pathology*; D005260:Female; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000379:methods
D002245:Carbon Dioxide