• F Maillet, M Pineton De Chambrun, Q Monzani, G Mercy, I Schuffenecker, A Mirand, C Deback, F Charlotte, E Fourniols, A Mathian, and Z Amoura.
• Service de médecine interne 2, institut E3M, Sorbonne université, hôpital La Pitié-Salpêtrière, Assistance publique-hôpitaux de Paris (AP-HP), 47-83, boulevard de l'Hôpital, 75013 Paris, France.
• Rev Med Interne. 2020 Mar 1; 41 (3): 200-205.

IntroductionChronic enterovirus infections can occur in primary immunodeficiency with hypogammaglobulinemia. They usually associate meningitis and myofasciitis. Such infections have also been described in adults with rituximab-induced hypogammaglobulinemia.Case ReportWe report the case of a 33-year-old woman who was given rituximab for immune thrombocytopenia and developed rituximab-induced hypogammaglobulinemia (IgG 4.4g/L). One year after the last rituximab infusion, she developed lower limbs myofasciitis, followed two months later by a chronic lymphocytic meningitis. PCR in the serum and the cerebrospinal fluid at the time of the meningitis and the myofasciitis were positive to the same enterovirus (echovirus 11) while it was negative in the fascia biopsy. Under treatment with intravenous immunoglobulins, all symptoms and laboratory abnormalities improved and enterovirus PCR became negative.ConclusionWe report a case of chronic enterovirus infection associating meningitis and myofasciitis in an adult with rituximab-induced hypogammaglobulinemia. Outcome was favorable under treatment with intravenous immunoglobulins.Copyright © 2020 Société Nationale Française de Médecine Interne (SNFMI). Published by Elsevier Masson SAS. All rights reserved.

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