Hippocampal Hyperintensities on Diffusion-Weighted MRI without Transient Global Amnesia.
- Author:
Moonyoung JEONG
1
;
Jeong Hee KIM
;
Jaehyun JIN
;
Hye Jin LEE
;
Yeonsil MOON
;
Jin Woo CHOI
;
Hahn Young KIM
Author Information
- Publication Type:Case Report
- Keywords: Transient global amnesia; Diffusion-weighted MRI; Hippocampus
- MeSH: Amnesia, Anterograde; Amnesia, Transient Global*; Hippocampus; Humans; Magnetic Resonance Imaging*; Nausea; Valsalva Maneuver; Vomiting
- From:Journal of the Korean Neurological Association 2016;34(5):360-362
- CountryRepublic of Korea
- Language:Korean
- Abstract: Dot-like hippocampal hyperintensities on diffusion-weighted magnetic resonance imaging (MRI) have been reported as an interesting imaging finding of transient global amnesia (TGA). We report three patients with such dot-like hippocampal hyperintensities who did not present with anterograde amnesia. Episodes associated with the Valsalva maneuver such as nausea or vomiting might have produced the dot-like hippocampal hyperintensities in these patients. However, depending on the individual susceptibility to hippocampal lesions, clinical symptoms of TGA might not be present even when hippocampal lesions are present.
