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Relevance of Brain 18F-FDG PET Imaging in Probable Seronegative Encephalitis With Catatonia: A Case Report

Abstract : Autoimmune encephalitis (AIE) is a rare, severe, and rapidly progressive encephalopathy, and its diagnosis is challenging, especially in adolescent populations when the presentation is mainly psychiatric. Currently, cerebral 18-fluorodeoxyglucose positron emission tomography (18 F-FDG-PET) imaging is not included in the diagnosis algorithm. We describe a 16-year-old patient with probable seronegative encephalitis with catatonia for which several cerebral PET scans were relevant and helpful for diagnosis, treatment decision making, and follow-up monitoring. The patient recovered after 2 years of treatment with etiologic treatment of AIE and treatment of catatonia. This case suggests a more systematic assessment of the clinical relevance of 18 F-FDG-PET imaging in probable seronegative AIE.
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Contributor : Gestionnaire Hal-Su <>
Submitted on : Wednesday, June 30, 2021 - 11:00:08 AM
Last modification on : Tuesday, July 13, 2021 - 3:27:25 AM

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Michaël Guetta, Aurélie Kas, Aveline Aouidad, Marine Soret, Yves Allenbach, et al.. Relevance of Brain 18F-FDG PET Imaging in Probable Seronegative Encephalitis With Catatonia: A Case Report. Frontiers in Psychiatry, Frontiers, 2021, 12, pp.685711. ⟨10.3389/fpsyt.2021.685711⟩. ⟨hal-03274512⟩

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