[A Pediatric Case of Clinically Mild Encephalitis/Encephalopathy with a Reversible Splenial Lesion(MERS)with Recurrent TIA-like Symptoms over a Prolonged Period].
Identifieur interne : 000018 ( Main/Exploration ); précédent : 000017; suivant : 000019[A Pediatric Case of Clinically Mild Encephalitis/Encephalopathy with a Reversible Splenial Lesion(MERS)with Recurrent TIA-like Symptoms over a Prolonged Period].
Auteurs : Akihiro Shigeno ; Takeshi Hiu ; Hiroshi Iwanaga ; Tadateru Yasu ; Ryoko Honda ; Kenjiro Nakaoka ; Yutaka Fukuda ; Tomonori Ono ; Ichiro Kawahara ; Wataru Haraguchi ; Ryujiro Ushijima ; Keisuke TsutsumiSource :
- No shinkei geka. Neurological surgery [ 0301-2603 ] ; 2020.
Abstract
We report a rare case of pediatric clinically mild encephalitis/encephalopathy with a reversible splenial lesion(MERS)associated with transient ischemic attack(TIA)-like symptoms. A 13-year-old boy who presented with transient left hemiparesis and dysarthria was transferred to our hospital. He had experienced similar symptoms at the age of nine years and was diagnosed with MERS type 2 due to the typical clinical course and MR imaging findings. His elder brother showed a similar clinical history at the age of eight years. DW-MR images on admission revealed high signal intensity areas in the splenium of the corpus callosum and deep white matter. The territories were depicted as low intensity on apparent diffusion coefficient maps and slightly high intensity on T2-weighted images. Recurrence of MERS type 2 was considered because the symptoms of the patient disappeared within several hours and the abnormal signal intensities markedly decreased on the follow-up DWI performed eight days after initial MR imaging. The abnormal MR imaging findings completely disappeared after five weeks. After discharge, the patient experienced eight TIA-like episodes with a similar clinical course and MR imaging findings over a period of six years. MERS associated with TIA-like episodes is extremely rare, especially MERS associated with recurrent episodes in multiple phases over a long period, as seen in the present case. In addition, the findings in the last two MR imaging scans involving the internal capsule, thalamus, and midbrain were highly unusual and maybe considered to be indicative of an advanced form of MERS type 2, as reported in other familial cases.
DOI: 10.11477/mf.1436204149
PubMed: 32094312
Affiliations:
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Le document en format XML
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<front><div type="abstract" xml:lang="en">We report a rare case of pediatric clinically mild encephalitis/encephalopathy with a reversible splenial lesion(MERS)associated with transient ischemic attack(TIA)-like symptoms. A 13-year-old boy who presented with transient left hemiparesis and dysarthria was transferred to our hospital. He had experienced similar symptoms at the age of nine years and was diagnosed with MERS type 2 due to the typical clinical course and MR imaging findings. His elder brother showed a similar clinical history at the age of eight years. DW-MR images on admission revealed high signal intensity areas in the splenium of the corpus callosum and deep white matter. The territories were depicted as low intensity on apparent diffusion coefficient maps and slightly high intensity on T2-weighted images. Recurrence of MERS type 2 was considered because the symptoms of the patient disappeared within several hours and the abnormal signal intensities markedly decreased on the follow-up DWI performed eight days after initial MR imaging. The abnormal MR imaging findings completely disappeared after five weeks. After discharge, the patient experienced eight TIA-like episodes with a similar clinical course and MR imaging findings over a period of six years. MERS associated with TIA-like episodes is extremely rare, especially MERS associated with recurrent episodes in multiple phases over a long period, as seen in the present case. In addition, the findings in the last two MR imaging scans involving the internal capsule, thalamus, and midbrain were highly unusual and maybe considered to be indicative of an advanced form of MERS type 2, as reported in other familial cases.</div>
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<name sortKey="Kawahara, Ichiro" sort="Kawahara, Ichiro" uniqKey="Kawahara I" first="Ichiro" last="Kawahara">Ichiro Kawahara</name>
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<name sortKey="Shigeno, Akihiro" sort="Shigeno, Akihiro" uniqKey="Shigeno A" first="Akihiro" last="Shigeno">Akihiro Shigeno</name>
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