Human Parechovirus Encephalitis in a Neonate: Neuroimaging Findings

A seven-day-old female baby born of second-degree consanguineous marriage presented to the Casualty Department with a history of feeding difficulty, irritability, and seizures for one day. There were abnormal movements of the upper and lower limbs lasting less than five minutes, with 4-5 episodes in...

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Main Authors: Jaya Selin Praveena Joseph, Pabbisetty Sushma, Ashok Ranjan, Senthil Kumar Aiyappan
Format: Article
Language:English
Published: JCDR Research and Publications Private Limited 2024-12-01
Series:Journal of Clinical and Diagnostic Research
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Online Access:https://www.jcdr.net/articles/PDF/20273/73034_CE[Ra1]_F(SHU)_Ref_Pat(OM)_PF1(KB_OM)_PFA(KM)_PB_redo(KB_IS)_PN(IS).pdf
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author Jaya Selin Praveena Joseph
Pabbisetty Sushma
Ashok Ranjan
Senthil Kumar Aiyappan
author_facet Jaya Selin Praveena Joseph
Pabbisetty Sushma
Ashok Ranjan
Senthil Kumar Aiyappan
author_sort Jaya Selin Praveena Joseph
collection DOAJ
description A seven-day-old female baby born of second-degree consanguineous marriage presented to the Casualty Department with a history of feeding difficulty, irritability, and seizures for one day. There were abnormal movements of the upper and lower limbs lasting less than five minutes, with 4-5 episodes in a day suggestive of bilateral multifocal chronic seizures. The baby was conscious on arrival and was admitted to the Neonatal Intensive Care Unit (NICU). The baby was delivered by lower segment caesarean section with a normal Appearance, Pulse, Grimace, Activity, and Respiration (APGAR) score of 8 and was discharged on day 3. There was no history of fever. On examination, the baby was dull and lethargic with normal vital parameters. The blood investigations were sent which included serum electrolytes, calcium, magnesium, glucose, ammonia, lactates, anion gap, pH, and ketone profile which were within normal limits. Because of the seizure and feeding difficulty, an inborn error of metabolism was suspected and the baby was subjected to Magnetic Resonance Imaging (MRI) of the brain. MRI of the brain showed no signal abnormalities in T2/Fluid Attenuated Inversion Recovery (FLAIR) images [Table/Fig-1a,b] with restricted diffusion in the subcortical, periventricular white matter of bilateral fronto-parieto-temporal lobes, external capsule, bilateral thalami, and corpus callosum [Table/Fig-2a-d]. Basal ganglia, brainstem, cerebellum, and occipital white matter were spared. Magnetic Resonance Spectroscopy (MRS) over basal ganglia was normal (Table/Fig 3). This imaging features with selective diffusion restriction involving subcortical, periventricular white matter of bilateral fronto-parieto-temporal lobes, external capsule, bilateral thalami, and corpus callosum were characteristic of Human Parechovirus (HPeV) encephalitis. On further workup for inborn errors of metabolism, Tandem Mass Spectrometry (TMS) 55 screening was normal. The baby was started on a loading dose of intravenous (IV) phenobarbitone, followed by an IV Levipil maintenance dose. On day 4 of admission, IV Levipil was changed to oral Levipil. On day 7 of admission, oral Levipil was stopped. The baby had no further seizures. Paediatric neurology opinion was obtained and an electroencephalogram (EEG) was taken on day 8 of admission, which turned out to be normal. Cerebrospinal Fluid (CSF) examination confirmed the finding of HPeV encephalitis. The baby improved symptomatically over the next few days with conservative management.
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spelling doaj-art-03af50b1b2ed4020a30b61ff736fd8f42024-12-05T10:59:56ZengJCDR Research and Publications Private LimitedJournal of Clinical and Diagnostic Research2249-782X0973-709X2024-12-011812010210.7860/JCDR/2024/73034.20273Human Parechovirus Encephalitis in a Neonate: Neuroimaging FindingsJaya Selin Praveena Joseph0Pabbisetty Sushma1Ashok Ranjan2Senthil Kumar Aiyappan3Junior Resident, Department of Radiodiagnosis, SRM Medical College Hospital and Research Centre, SRMIST, Kattankulathur, Chengalpattu, Tamil Nadu, India.Junior Resident, Department of Radiodiagnosis, SRM Medical College Hospital and Research Centre, SRMIST, Kattankulathur, Chengalpattu, Tamil Nadu, India. Junior Resident, Department of Radiodiagnosis, SRM Medical College Hospital and Research Centre, SRMIST, Kattankulathur, Chengalpattu, Tamil Nadu, India.Professor and Head, Department of Radiodiagnosis, SRM Medical College Hospital and Research Centre, SRMIST, Kattankulathur, Chengalpattu, Tamil Nadu, India.A seven-day-old female baby born of second-degree consanguineous marriage presented to the Casualty Department with a history of feeding difficulty, irritability, and seizures for one day. There were abnormal movements of the upper and lower limbs lasting less than five minutes, with 4-5 episodes in a day suggestive of bilateral multifocal chronic seizures. The baby was conscious on arrival and was admitted to the Neonatal Intensive Care Unit (NICU). The baby was delivered by lower segment caesarean section with a normal Appearance, Pulse, Grimace, Activity, and Respiration (APGAR) score of 8 and was discharged on day 3. There was no history of fever. On examination, the baby was dull and lethargic with normal vital parameters. The blood investigations were sent which included serum electrolytes, calcium, magnesium, glucose, ammonia, lactates, anion gap, pH, and ketone profile which were within normal limits. Because of the seizure and feeding difficulty, an inborn error of metabolism was suspected and the baby was subjected to Magnetic Resonance Imaging (MRI) of the brain. MRI of the brain showed no signal abnormalities in T2/Fluid Attenuated Inversion Recovery (FLAIR) images [Table/Fig-1a,b] with restricted diffusion in the subcortical, periventricular white matter of bilateral fronto-parieto-temporal lobes, external capsule, bilateral thalami, and corpus callosum [Table/Fig-2a-d]. Basal ganglia, brainstem, cerebellum, and occipital white matter were spared. Magnetic Resonance Spectroscopy (MRS) over basal ganglia was normal (Table/Fig 3). This imaging features with selective diffusion restriction involving subcortical, periventricular white matter of bilateral fronto-parieto-temporal lobes, external capsule, bilateral thalami, and corpus callosum were characteristic of Human Parechovirus (HPeV) encephalitis. On further workup for inborn errors of metabolism, Tandem Mass Spectrometry (TMS) 55 screening was normal. The baby was started on a loading dose of intravenous (IV) phenobarbitone, followed by an IV Levipil maintenance dose. On day 4 of admission, IV Levipil was changed to oral Levipil. On day 7 of admission, oral Levipil was stopped. The baby had no further seizures. Paediatric neurology opinion was obtained and an electroencephalogram (EEG) was taken on day 8 of admission, which turned out to be normal. Cerebrospinal Fluid (CSF) examination confirmed the finding of HPeV encephalitis. The baby improved symptomatically over the next few days with conservative management.https://www.jcdr.net/articles/PDF/20273/73034_CE[Ra1]_F(SHU)_Ref_Pat(OM)_PF1(KB_OM)_PFA(KM)_PB_redo(KB_IS)_PN(IS).pdfbraincerebrospinal fluidfronto-parieto-temporal lobeseizureswhite matter
spellingShingle Jaya Selin Praveena Joseph
Pabbisetty Sushma
Ashok Ranjan
Senthil Kumar Aiyappan
Human Parechovirus Encephalitis in a Neonate: Neuroimaging Findings
Journal of Clinical and Diagnostic Research
brain
cerebrospinal fluid
fronto-parieto-temporal lobe
seizures
white matter
title Human Parechovirus Encephalitis in a Neonate: Neuroimaging Findings
title_full Human Parechovirus Encephalitis in a Neonate: Neuroimaging Findings
title_fullStr Human Parechovirus Encephalitis in a Neonate: Neuroimaging Findings
title_full_unstemmed Human Parechovirus Encephalitis in a Neonate: Neuroimaging Findings
title_short Human Parechovirus Encephalitis in a Neonate: Neuroimaging Findings
title_sort human parechovirus encephalitis in a neonate neuroimaging findings
topic brain
cerebrospinal fluid
fronto-parieto-temporal lobe
seizures
white matter
url https://www.jcdr.net/articles/PDF/20273/73034_CE[Ra1]_F(SHU)_Ref_Pat(OM)_PF1(KB_OM)_PFA(KM)_PB_redo(KB_IS)_PN(IS).pdf
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