Bilateral occipital lobe hyperperfusion demonstrated by single photon emission computed tomography during seizure-related cortical blindness.
An 81-year-old woman with chronic dementia developed lethargy, confusion, binocular blindness, and episodic left-beating nystagmus. Diffusion magnetic resonance imaging (MRI) revealed high signal in the right occipital region suggesting recent ischemia. A concurrent electroencephalogram (EEG) showed a right occipital seizure focus that spread to the opposite occipital lobe. A single photon emission computed tomography (SPECT) performed during the seizure epoch showed bilateral occipital lobe hyperperfusion. This is the second report to document SPECT bi-occipital hyperperfusion in seizure-related cortical blindness.
Kattah
Jorge C
JC
Department of Neurology, University of Illinois College of Medicine at Peoria, OSF Saint Francis Medical Center, 530 N.E. Glen Oak Ave., Peoria, IL 61637, USA. kattahj@uic.edu
Gujrati
Meena
M
Hui
Edward T
ET
Chen
Charles C
CC
D000368:Aged; D000369:Aged, 80 and over; D000544:Alzheimer Disease / Q000150:complications; D019575:Blindness, Cortical / Q000209:etiology*; D004569:Electroencephalography; D004827:Epilepsy / Q000150:complications* / Q000175:diagnosis; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D007511:Ischemia / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000209:etiology*; D008279:Magnetic Resonance Imaging; D009759:Nystagmus, Pathologic / Q000150:complications; D009778:Occipital Lobe / Q000098:blood supply*; D015899:Tomography, Emission-Computed, Single-Photon