Aurélien Benoilid1, Caroline Tilikete2, Nicolas Collongues3, Carl Arndt4, Alain Vighetto2, Catherine Vignal5, Jérôme de Seze3. 1. University Hospital, France Clinical Investigation Centre, INSERM 10002, France aurelienbenoilid@gmail.com. 2. Neurological Hospital Pierre Wertheimer, France. 3. University Hospital, France Clinical Investigation Centre, INSERM 10002, France. 4. University Hospital, France. 5. University Hospital Lariboisière, France.
Abstract
BACKGROUND: Optic neuritis (ON) may be the first symptom of a central nervous system demyelinating, systemic or infectious disease but few patients experience recurrent episodes and have a negative workup. OBJECTIVE: This disorder, named relapsing optic neuritis (RON), is poorly described in the literature and still presents a particular challenge in diagnosis and management. METHODS: We describe the clinical, laboratory, magnetic resonance imaging (MRI) and disability course of RON in a French cohort of 62 patients, based on a multicentre, retrospective, observational study. RESULTS: In our cohort, we identified two distinct groups of RON patients. The first is characterised by relapsing inflammatory optic neuritis (RION, 68%), which is non-progressive, whereas the second presented as a chronic relapsing inflammatory optic neuritis (CRION, 32%), which is progressive. We have noted more cases with steroid dependence in the CRION group than the RION group (42% vs 10%). The long-term visual prognosis was more severe in CRION patients and neuromyelitis optica-immunoglobulin G (NMO-IgG)-positive patients. CONCLUSION: RON is likely a separate entity corresponding to an autoimmune disease that differs from multiple sclerosis (MS), NMO and vasculitis. We provide a new classification system based on a better understanding of RON which could allow an improved management by early treatment of poor prognosis forms.
BACKGROUND:Optic neuritis (ON) may be the first symptom of a central nervous system demyelinating, systemic or infectious disease but few patients experience recurrent episodes and have a negative workup. OBJECTIVE: This disorder, named relapsing optic neuritis (RON), is poorly described in the literature and still presents a particular challenge in diagnosis and management. METHODS: We describe the clinical, laboratory, magnetic resonance imaging (MRI) and disability course of RON in a French cohort of 62 patients, based on a multicentre, retrospective, observational study. RESULTS: In our cohort, we identified two distinct groups of RON patients. The first is characterised by relapsing inflammatory optic neuritis (RION, 68%), which is non-progressive, whereas the second presented as a chronic relapsing inflammatory optic neuritis (CRION, 32%), which is progressive. We have noted more cases with steroid dependence in the CRION group than the RION group (42% vs 10%). The long-term visual prognosis was more severe in CRION patients and neuromyelitis optica-immunoglobulin G (NMO-IgG)-positive patients. CONCLUSION: RON is likely a separate entity corresponding to an autoimmune disease that differs from multiple sclerosis (MS), NMO and vasculitis. We provide a new classification system based on a better understanding of RON which could allow an improved management by early treatment of poor prognosis forms.
Authors: Laura Navarro Cantó; Sara Carratalá Boscá; Carmen Alcalá Vicente; Sara Gil-Perontín; Francisco Pérez-Miralles; Jessica Castillo Villalba; Laura Cubas Nuñez; Bonaventura Casanova Estruch Journal: Front Neurol Date: 2019-11-01 Impact factor: 4.003