Autoimmune cerebellar hypermetabolism: Report of three cases and literature overview.

Autor: Brunet de Courssou JB; Neurology department, Percy Military hospital, 92190 Clamart, France. Electronic address: jean-baptiste.brunet-de-courssou@aphp.fr., Castilla-Lievre MA; Nuclear medicine department, Antoine-Béclère university Hospital, 92140 Clamart, France., Maillot J; Neurology department, Percy Military hospital, 92190 Clamart, France., Brechemier ML; Neurology department, Percy Military hospital, 92190 Clamart, France., Ohlmann C; Radiology department, Percy Military hospital, 92190 Clamart, France., Sallansonnet-Froment M; Neurology department, Percy Military hospital, 92190 Clamart, France., Tafani C; Neurology department, Percy Military hospital, 92190 Clamart, France., Psimaras D; Neurology department, neuro-oncology unit, Pitié-Salpêtrière university hospital, 75013 Paris, France., Ricard D; Neurology department, Percy Military hospital, 92190 Clamart, France; Centre Borelli, UMR 9010, université de Paris-Saclay, École normale supérieure Paris-Saclay, service de santé des armées, CNRS, université de Paris, INSERM, Paris, France., Bompaire F; Neurology department, Percy Military hospital, 92190 Clamart, France; Centre Borelli, UMR 9010, université de Paris-Saclay, École normale supérieure Paris-Saclay, service de santé des armées, CNRS, université de Paris, INSERM, Paris, France., Taifas I; Neurology department, Percy Military hospital, 92190 Clamart, France.
Jazyk: angličtina
Zdroj: Revue neurologique [Rev Neurol (Paris)] 2022 Apr; Vol. 178 (4), pp. 337-346. Date of Electronic Publication: 2021 Oct 14.
DOI: 10.1016/j.neurol.2021.07.018
Abstrakt: We report three cases of vermian cerebellar hypermetabolism in patients with autoimmune encephalitis. One of our patients was positive for anti-Ma2 antibodies and one for anti-Zic4 antibodies while the remaining patient did not present any known antibodies. The seronegative patient deteriorated after immune checkpoint inhibitor treatment for a pulmonary adenocarcinoma and improved with immunosuppressive drugs, which is in favour of an underlying autoimmune mechanism. They all presented with subacute neurological symptoms. Brain magnetic resonance imaging was normal except in one patient, where hyperintensities were present on FLAIR sequence around the third ventricle and the cerebral aqueduct. 18 F-FDG brain positron emission tomography with computed tomography ( 18 F-FDG PET-CT) demonstrated an unusual vermian cerebellar hypermetabolism in the three cases. While cerebellar hypermetabolism on 18 F-FDG PET-CT has been described in various neurological diseases, such vermian - and more broadly cerebellar - hypermetabolism was seldom described in previous studies on autoimmune encephalitis. When differential diagnoses have been ruled out, this pattern may be of interest for the positive diagnosis of autoimmune encephalitis in difficult diagnostic cases.
(Copyright © 2021 Elsevier Masson SAS. All rights reserved.)
Databáze: MEDLINE
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