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MRI Findings of COVID-19 Associated Acute Necrotizing Encephalopathy in Two Pediatric Patients: Case Report and
Abstract:
Acute necrotizing encephalopathy (ANE) is a rare immune-mediated complication of a viral infection commonly involving the bilateral thalamus and has been reported mainly in children. Here, we describe the MRI findings of coronavirus disease 2019 (COVID-19)-associated ANE in two pediatric patients, including a 7-year-old girl with fever and mental change, and a 6-year-old girl with fever and generalized seizures. Brain MRI revealed symmetrical T2 fluid attenuated inversion recovery high-signal intensity lesions in the bilateral thalamus with central hemorrhage. In one patient, the thalamic lesions showed a trilaminar pattern on the apparent diffusion coefficient map. This report emphasizes the importance of creating awareness regarding these findings in patients with COVID-19, particularly in children with severe neurological symptoms. Furthermore, it provides a literature review of several documented cases of COVID-19 presenting with bilateral thalamic hemorrhagic necrosis, suggesting a diagnosis of ANE.
Insights
Acute necrotizing encephalopathy (ANE), a rare brain condition, can be associated with COVID-19 in children. This study highlights key MRI findings in pediatric patients with COVID-19-associated ANE.
Area of Science:
- Neurology
- Radiology
- Infectious Diseases
Background:
- Acute necrotizing encephalopathy (ANE) is a rare, immune-mediated neurological complication often following viral infections, primarily affecting children.
- It characteristically involves bilateral thalamic lesions.
Observation:
- This report details the MRI findings in two pediatric patients diagnosed with COVID-19-associated ANE.
- Both patients presented with fever and neurological symptoms (mental change and seizures).
- Brain MRI revealed symmetrical thalamic lesions with high signal intensity on T2-FLAIR and central hemorrhage.
Findings:
- The thalamic lesions exhibited a characteristic trilaminar pattern on the apparent diffusion coefficient (ADC) map in one patient.
- The findings suggest bilateral thalamic hemorrhagic necrosis as a potential manifestation of ANE in COVID-19.
Implications:
- Highlights the importance of recognizing ANE in pediatric COVID-19 cases with severe neurological symptoms.
- Emphasizes the need for increased awareness among clinicians regarding these specific neuroimaging findings.
- Contributes to the understanding of rare neurological complications associated with coronavirus disease 2019.
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