J Korean Neurol Assoc.  2011 Aug;29(3):234-237.

Retrograde Amnesia as a Predominant Symptom of Transient Global Amnesia

Affiliations
  • 1Department of Neurology, Keimyung University School of Medicine, Daegu, Korea. geschwind@dsmc.or.kr

Abstract

Transient global amnesia (TGA) causes retrograde amnesia, but there have been few reports of retrograde amnesia as a presenting symptom in TGA. A 52-year-old male who had acute amnesia for the past 4 years presented with TGA and recovered within 1 day. Brain magnetic resonance imaging revealed a lesion in the left hippocampus, and brain single-photon emission computed tomography revealed decreased blood flow in the left temporal and frontal areas. We speculated that hippocampal lesion with a frontal perfusion defect can be a cause of TGA.

Keyword

Retrograde amnesia; Transient global amnesia; Hippocampus

MeSH Terms

Amnesia
Amnesia, Retrograde
Amnesia, Transient Global
Brain
Hippocampus
Humans
Magnetic Resonance Imaging
Male
Middle Aged
Perfusion
Tomography, Emission-Computed
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