Influenza-Associated Encephalitis/Encephalopathy with a Reversible Lesion in the Splenium of the Corpus Callosum: A Case Report and Literature Review

We report the cases of two patients with influenza-associated encephalitis/encephalopathy (IAEE) who presented with mild CNS manifestations and complete recovery within a few days. Initial MR imaging at days 4 and 5 revealed a lesion in the central portion of the splenium of the corpus callosum with...

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Published inAmerican journal of neuroradiology : AJNR Vol. 25; no. 5; pp. 798 - 802
Main Authors Takanashi, Jun-ichi, Barkovich, A. James, Yamaguchi, Ken-ichi, Kohno, Yoichi
Format Journal Article
LanguageEnglish
Published Oak Brook, IL Am Soc Neuroradiology 01.05.2004
American Society of Neuroradiology
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ISSN0195-6108
1936-959X

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Abstract We report the cases of two patients with influenza-associated encephalitis/encephalopathy (IAEE) who presented with mild CNS manifestations and complete recovery within a few days. Initial MR imaging at days 4 and 5 revealed a lesion in the central portion of the splenium of the corpus callosum with a reduced apparent diffusion coefficient (ADC) value, which completely resolved on follow-up studies at day 10. We postulate two possible mechanisms for decreased ADC; namely, intramyelinic edema and an inflammatory infiltrate.
AbstractList We report the cases of two patients with influenza-associated encephalitis/encephalopathy (IAEE) who presented with mild CNS manifestations and complete recovery within a few days. Initial MR imaging at days 4 and 5 revealed a lesion in the central portion of the splenium of the corpus callosum with a reduced apparent diffusion coefficient (ADC) value, which completely resolved on follow-up studies at day 10. We postulate two possible mechanisms for decreased ADC; namely, intramyelinic edema and an inflammatory infiltrate.
We report the cases of two patients with influenza-associated encephalitis/encephalopathy (IAEE) who presented with mild CNS manifestations and complete recovery within a few days. Initial MR imaging at days 4 and 5 revealed a lesion in the central portion of the splenium of the corpus callosum with a reduced apparent diffusion coefficient (ADC) value, which completely resolved on follow-up studies at day 10. We postulate two possible mechanisms for decreased ADC; namely, intramyelinic edema and an inflammatory infiltrate.We report the cases of two patients with influenza-associated encephalitis/encephalopathy (IAEE) who presented with mild CNS manifestations and complete recovery within a few days. Initial MR imaging at days 4 and 5 revealed a lesion in the central portion of the splenium of the corpus callosum with a reduced apparent diffusion coefficient (ADC) value, which completely resolved on follow-up studies at day 10. We postulate two possible mechanisms for decreased ADC; namely, intramyelinic edema and an inflammatory infiltrate.
Author Takanashi, Jun-ichi
Yamaguchi, Ken-ichi
Kohno, Yoichi
Barkovich, A. James
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Keywords Infection
Case study
Encephalitis
Nervous system diseases
Radiodiagnosis
Viral disease
Central nervous system disease
Influenza A
Corpus callosum
Cerebral disorder
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References 15569767 - AJNR Am J Neuroradiol. 2004 Nov-Dec;25(10):1863-4
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Snippet We report the cases of two patients with influenza-associated encephalitis/encephalopathy (IAEE) who presented with mild CNS manifestations and complete...
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SubjectTerms Biological and medical sciences
Brain
Child
Corpus Callosum
Diffusion Magnetic Resonance Imaging
Encephalitis, Viral - diagnosis
Encephalitis, Viral - virology
Female
Humans
Influenza, Human - diagnosis
Investigative techniques, diagnostic techniques (general aspects)
Male
Medical sciences
Nervous system
Radiodiagnosis. Nmr imagery. Nmr spectrometry
Title Influenza-Associated Encephalitis/Encephalopathy with a Reversible Lesion in the Splenium of the Corpus Callosum: A Case Report and Literature Review
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