Transient global amnesia associated with an acute infarction in the retrosplenium of the corpus callosum.
We present a patient with transient global amnesia (TGA) whose diffusion-weighted imaging (DWI) study showed a high-intensity signal in the left retrosplenium of the corpus callosum. In previous studies, lesions in the retrosplenium caused permanent but not transient global amnesia, called retrosplenial amnesia, by involving the thalamocortical portion of the Papez' circuit. This is the first report indicating that TGA can be associated with acute infarction only in the left retrosplenium of the corpus callosum.
Cerebrovascular Division, Department of Medicine, National Cardiovascular Center, Fujishirodai, Suita, Osaka 565-8565, Japan. ksaito@hsp.ncvc.go.jp
Kozue
K
Saito
Kazumi
K
Kimura
Kazuo
K
Minematsu
Atsushi
A
Shiraishi
Makoto
M
Nakajima
D020236:Amnesia, Transient Global / Q000150:complications* / Q000175:diagnosis; D002545:Brain Ischemia / Q000473:pathology; D002544:Cerebral Infarction / Q000150:complications* / Q000175:diagnosis; D003337:Corpus Callosum / Q000473:pathology*; D038524:Diffusion Magnetic Resonance Imaging; D007839:Functional Laterality; D006801:Humans; D002546:Ischemic Attack, Transient; D008297:Male; D008875:Middle Aged