MRI Findings in Transient Global Amnesia
نویسنده
چکیده
Transient global amnesia (TGA) is a disorder characterized by a sudden attack of severe anterograde amnesia, where patients are unable to learn and recall novel information during the event. Although fi rst described at least 60 years ago, the etiology and pathophysiology of TGA remain unclear and have been a matter of debate among clinicians and researchers. In this paper, we present a case of TGA with typical MRI fi ndings and the review of literature.
منابع مشابه
Bilateral hippocampal abnormalities on diffusion-weighted MRI in transient global amnesia: report of a case.
The pathophysiology of transient global amnesia (TGA) is still speculative. Recently, diffusion-weighted image (DWI) of magnetic resonance imaging (MRI) documented tiny lesions in the hippocampus of patients with TGA in the acute stage. Most studies reported unilateral lesions on MRI. We present one patient of TGA with high signal-intensity lesions in bilateral hippocampus on DWI at the acute s...
متن کاملTransient global amnesia.
Received on: Mar 27, 2012 – Accepted on: Apr 23, 2012 A 65-year-old male patient with no past medical history, complains of sudden loss of memory that lasted about four hours. He was submitted to a magnetic resonance image (MRI) of the cranium, which showed no alterations. Follow-up MRI 48 hours later showed a diffusion restriction focus in the left hippocampus, consistent with the clinical hyp...
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Objects: Different theories were suggested on the etiopathogenesis of transient global amnesia. Methods: We demonstrate a patient with transient global amnesia, in whom, a transient hyperintense signal change on left hippocampus was detected in diffusionand T2weighted magnetic resonance images. Conclusion: The absence of vascular risk factors or atherosclerotic changes in neuroimaging, in addit...
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