A lesion diagnosed by MRI in a case of transient global amnesia

Takanori Inamura; Kiyoshi Nakazaki; Osamu Yasuda; Keiji Oi; Takato Morioka; Yasuhiko Nakamura; Akira Nakamizo; Satoshi Inoha; Toshiyuki Amano; Masashi Fukui

A lesion diagnosed by MRI in a case of transient global amnesia

Takanori Inamura, Kiyoshi Nakazaki, Osamu Yasuda, Keiji Oi, Takato Morioka, Yasuhiko Nakamura, Akira Nakamizo, Satoshi Inoha, Toshiyuki Amano, Masashi Fukui

Department of Neurosurgery

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Transient global amesia (TGA) had been recognized as a disease without abnormal findings on neuroimaging before magnetic resonance (MRI) imaging was practicable. Recently, abnormal findings on MRI reported in cases of TGA. We here reported a case of TGA showing a transient abnormal intensity in left hippocampus on MRI diffusion-weighted image. A 52-year-old man suddenly became to unable to keep his recent memory without histories of trauma or epilepsy. He showed no abnormal neurologic findings excepting for the recent memory. MRI performed within an hour after onset demonstrated no abnormality on T 1-and T 2-weighted images. Diffusion-weighted image (b = 1,000) showed hyperintensity in the left medial temporal lobe, and the apparent diffusion coefficient(ADC) in this region was lower (72.8 cm²/s) than that in the contralateral region (94.4 cm²/s). TGA was completely resolved 17 hours after onset.

Original language	English
Pages (from-to)	419-422
Number of pages	4
Journal	Brain and Nerve
Volume	54
Issue number	5
Publication status	Published - 2002

All Science Journal Classification (ASJC) codes

Neuroscience(all)

Cite this

@article{c34bb55fc96842e0837725d8e57855f8,

title = "A lesion diagnosed by MRI in a case of transient global amnesia",

abstract = "Transient global amesia (TGA) had been recognized as a disease without abnormal findings on neuroimaging before magnetic resonance (MRI) imaging was practicable. Recently, abnormal findings on MRI reported in cases of TGA. We here reported a case of TGA showing a transient abnormal intensity in left hippocampus on MRI diffusion-weighted image. A 52-year-old man suddenly became to unable to keep his recent memory without histories of trauma or epilepsy. He showed no abnormal neurologic findings excepting for the recent memory. MRI performed within an hour after onset demonstrated no abnormality on T 1-and T 2-weighted images. Diffusion-weighted image (b = 1,000) showed hyperintensity in the left medial temporal lobe, and the apparent diffusion coefficient(ADC) in this region was lower (72.8 cm2/s) than that in the contralateral region (94.4 cm2/s). TGA was completely resolved 17 hours after onset.",

author = "Takanori Inamura and Kiyoshi Nakazaki and Osamu Yasuda and Keiji Oi and Takato Morioka and Yasuhiko Nakamura and Akira Nakamizo and Satoshi Inoha and Toshiyuki Amano and Masashi Fukui",

year = "2002",

language = "English",

volume = "54",

pages = "419--422",

journal = "Brain and Nerve",

issn = "0006-8969",

publisher = "Igaku-Shoin Ltd",

number = "5",

}

TY - JOUR

T1 - A lesion diagnosed by MRI in a case of transient global amnesia

AU - Inamura, Takanori

AU - Nakazaki, Kiyoshi

AU - Yasuda, Osamu

AU - Oi, Keiji

AU - Morioka, Takato

AU - Nakamura, Yasuhiko

AU - Nakamizo, Akira

AU - Inoha, Satoshi

AU - Amano, Toshiyuki

AU - Fukui, Masashi

PY - 2002

Y1 - 2002

N2 - Transient global amesia (TGA) had been recognized as a disease without abnormal findings on neuroimaging before magnetic resonance (MRI) imaging was practicable. Recently, abnormal findings on MRI reported in cases of TGA. We here reported a case of TGA showing a transient abnormal intensity in left hippocampus on MRI diffusion-weighted image. A 52-year-old man suddenly became to unable to keep his recent memory without histories of trauma or epilepsy. He showed no abnormal neurologic findings excepting for the recent memory. MRI performed within an hour after onset demonstrated no abnormality on T 1-and T 2-weighted images. Diffusion-weighted image (b = 1,000) showed hyperintensity in the left medial temporal lobe, and the apparent diffusion coefficient(ADC) in this region was lower (72.8 cm2/s) than that in the contralateral region (94.4 cm2/s). TGA was completely resolved 17 hours after onset.

AB - Transient global amesia (TGA) had been recognized as a disease without abnormal findings on neuroimaging before magnetic resonance (MRI) imaging was practicable. Recently, abnormal findings on MRI reported in cases of TGA. We here reported a case of TGA showing a transient abnormal intensity in left hippocampus on MRI diffusion-weighted image. A 52-year-old man suddenly became to unable to keep his recent memory without histories of trauma or epilepsy. He showed no abnormal neurologic findings excepting for the recent memory. MRI performed within an hour after onset demonstrated no abnormality on T 1-and T 2-weighted images. Diffusion-weighted image (b = 1,000) showed hyperintensity in the left medial temporal lobe, and the apparent diffusion coefficient(ADC) in this region was lower (72.8 cm2/s) than that in the contralateral region (94.4 cm2/s). TGA was completely resolved 17 hours after onset.

UR - http://www.scopus.com/inward/record.url?scp=0036267980&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036267980&partnerID=8YFLogxK

M3 - Article

C2 - 12058411

AN - SCOPUS:0036267980

SN - 0006-8969

VL - 54

SP - 419

EP - 422

JO - Brain and Nerve

JF - Brain and Nerve

IS - 5

ER -

A lesion diagnosed by MRI in a case of transient global amnesia

Abstract

All Science Journal Classification (ASJC) codes

Other files and links

Fingerprint

Cite this