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Cacciaguerra L, Morris P, Tobin WO, Chen JJ, Banks SA, Elsbernd P, Redenbaugh V, Tillema JM, Montini F, Sechi E, Lopez-Chiriboga AS, Zalewski N, Guo Y, Rocca MA, Filippi M, Pittock SJ, Lucchinetti CF, Flanagan EP. Tumefactive Demyelination in MOG Ab-Associated Disease, Multiple Sclerosis, and AQP-4-IgG-Positive Neuromyelitis Optica Spectrum Disorder. Neurology 2023; 100:e1418-e1432. [PMID: 36690455 PMCID: PMC10065219 DOI: 10.1212/wnl.0000000000206820] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 12/02/2022] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Studies on tumefactive brain lesions in myelin oligodendrocyte glycoprotein-immunoglobulin G (IgG)-associated disease (MOGAD) are lacking. We sought to characterize the frequency clinical, laboratory, and MRI features of these lesions in MOGAD and compare them with those in multiple sclerosis (MS) and aquaporin-4-IgG-positive neuromyelitis optica spectrum disorder (AQP4+NMOSD). METHODS We retrospectively searched 194 patients with MOGAD and 359 patients with AQP4+NMOSD with clinical/MRI details available from the Mayo Clinic databases and included those with ≥1 tumefactive brain lesion (maximum transverse diameter ≥2 cm) on MRI. Patients with tumefactive MS were identified using the Mayo Clinic medical record linkage system. Binary multivariable stepwise logistic regression identified independent predictors of MOGAD diagnosis; Cox proportional regression models were used to assess the risk of relapsing disease and gait aid in patients with tumefactive MOGAD vs those with nontumefactive MOGAD. RESULTS We included 108 patients with tumefactive demyelination (MOGAD = 43; AQP4+NMOSD = 16; and MS = 49). Tumefactive lesions were more frequent among those with MOGAD (43/194 [22%]) than among those with AQP4+NMOSD (16/359 [5%], p < 0.001). Risk of relapse and need for gait aid were similar in tumefactive and nontumefactive MOGAD. Clinical features more frequent in MOGAD than in MS included headache (18/43 [42%] vs 10/49 [20%]; p = 0.03) and somnolence (12/43 [28%] vs 2/49 [4%]; p = 0.003), the latter also more frequent than in AQP4+NMOSD (0/16 [0%]; p = 0.02). The presence of peripheral T2-hypointense rim, T1-hypointensity, diffusion restriction (particularly an arc pattern), ring enhancement, and Baló-like or cystic appearance favored MS over MOGAD (p ≤ 0.001). MRI features were broadly similar in MOGAD and AQP4+NMOSD, except for more frequent diffusion restriction in AQP4+NMOSD (10/15 [67%]) than in MOGAD (11/42 [26%], p = 0.005). CSF analysis revealed less frequent positive oligoclonal bands in MOGAD (2/37 [5%]) than in MS (30/43 [70%], p < 0.001) and higher median white cell count in MOGAD than in MS (33 vs 6 cells/μL, p < 0.001). At baseline, independent predictors of MOGAD diagnosis were the presence of somnolence/headache, absence of T2-hypointense rim, lack of T1-hypointensity, and no diffusion restriction (Nagelkerke R 2 = 0.67). Tumefactive lesion resolution was more common in MOGAD than in MS or AQP4+NMOSD and improved model performance. DISCUSSION Tumefactive lesions are frequent in MOGAD but not associated with a worse prognosis. The clinical, MRI, and CSF attributes of tumefactive MOGAD differ from those of tumefactive MS and are more similar to those of tumefactive AQP4+NMOSD with the exception of lesion resolution, which favors MOGAD.
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Affiliation(s)
- Laura Cacciaguerra
- From the Department of Neurology and Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology (L.C., W.O.T., J.J.C., S.A.B., V.R., J.-M.T., Y.G., S.J.P., C.F.L., E.P.F.), Mayo Clinic, Rochester, MN; Vita-Salute San Raffaele University (L.C., F.M., M.A.R., M.F.); Neuroimaging Research Unit (L.C., M.A.R., M.F.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy; Department of Radiology (P.M.), Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN; Department of Neurology (P.E.), San Antonio Military Medical Center, Fort Sam Houston, TX; Neurology Unit (F.M., M.A.R., M.F.), IRCCS San Raffaele Scientific Institute, Milan; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology (A.S.L.-C.), Mayo Clinic, Jacksonville, FL; Department of Neurology (N.Z.), Mayo Clinic, Scottsdale, AZ; Neurorehabilitation Unit (M.F.), IRCCS San Raffaele Scientific Institute; Neurophysiology Service (M.F.), IRCCS San Raffaele Scientific Institute, Milan, Italy; and Laboratory Medicine and Pathology (S.J.P., E.P.F.), Mayo Clinic, Rochester, MN
| | - Pearse Morris
- From the Department of Neurology and Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology (L.C., W.O.T., J.J.C., S.A.B., V.R., J.-M.T., Y.G., S.J.P., C.F.L., E.P.F.), Mayo Clinic, Rochester, MN; Vita-Salute San Raffaele University (L.C., F.M., M.A.R., M.F.); Neuroimaging Research Unit (L.C., M.A.R., M.F.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy; Department of Radiology (P.M.), Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN; Department of Neurology (P.E.), San Antonio Military Medical Center, Fort Sam Houston, TX; Neurology Unit (F.M., M.A.R., M.F.), IRCCS San Raffaele Scientific Institute, Milan; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology (A.S.L.-C.), Mayo Clinic, Jacksonville, FL; Department of Neurology (N.Z.), Mayo Clinic, Scottsdale, AZ; Neurorehabilitation Unit (M.F.), IRCCS San Raffaele Scientific Institute; Neurophysiology Service (M.F.), IRCCS San Raffaele Scientific Institute, Milan, Italy; and Laboratory Medicine and Pathology (S.J.P., E.P.F.), Mayo Clinic, Rochester, MN
| | - W Oliver Tobin
- From the Department of Neurology and Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology (L.C., W.O.T., J.J.C., S.A.B., V.R., J.-M.T., Y.G., S.J.P., C.F.L., E.P.F.), Mayo Clinic, Rochester, MN; Vita-Salute San Raffaele University (L.C., F.M., M.A.R., M.F.); Neuroimaging Research Unit (L.C., M.A.R., M.F.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy; Department of Radiology (P.M.), Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN; Department of Neurology (P.E.), San Antonio Military Medical Center, Fort Sam Houston, TX; Neurology Unit (F.M., M.A.R., M.F.), IRCCS San Raffaele Scientific Institute, Milan; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology (A.S.L.-C.), Mayo Clinic, Jacksonville, FL; Department of Neurology (N.Z.), Mayo Clinic, Scottsdale, AZ; Neurorehabilitation Unit (M.F.), IRCCS San Raffaele Scientific Institute; Neurophysiology Service (M.F.), IRCCS San Raffaele Scientific Institute, Milan, Italy; and Laboratory Medicine and Pathology (S.J.P., E.P.F.), Mayo Clinic, Rochester, MN
| | - John J Chen
- From the Department of Neurology and Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology (L.C., W.O.T., J.J.C., S.A.B., V.R., J.-M.T., Y.G., S.J.P., C.F.L., E.P.F.), Mayo Clinic, Rochester, MN; Vita-Salute San Raffaele University (L.C., F.M., M.A.R., M.F.); Neuroimaging Research Unit (L.C., M.A.R., M.F.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy; Department of Radiology (P.M.), Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN; Department of Neurology (P.E.), San Antonio Military Medical Center, Fort Sam Houston, TX; Neurology Unit (F.M., M.A.R., M.F.), IRCCS San Raffaele Scientific Institute, Milan; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology (A.S.L.-C.), Mayo Clinic, Jacksonville, FL; Department of Neurology (N.Z.), Mayo Clinic, Scottsdale, AZ; Neurorehabilitation Unit (M.F.), IRCCS San Raffaele Scientific Institute; Neurophysiology Service (M.F.), IRCCS San Raffaele Scientific Institute, Milan, Italy; and Laboratory Medicine and Pathology (S.J.P., E.P.F.), Mayo Clinic, Rochester, MN
| | - Samantha A Banks
- From the Department of Neurology and Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology (L.C., W.O.T., J.J.C., S.A.B., V.R., J.-M.T., Y.G., S.J.P., C.F.L., E.P.F.), Mayo Clinic, Rochester, MN; Vita-Salute San Raffaele University (L.C., F.M., M.A.R., M.F.); Neuroimaging Research Unit (L.C., M.A.R., M.F.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy; Department of Radiology (P.M.), Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN; Department of Neurology (P.E.), San Antonio Military Medical Center, Fort Sam Houston, TX; Neurology Unit (F.M., M.A.R., M.F.), IRCCS San Raffaele Scientific Institute, Milan; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology (A.S.L.-C.), Mayo Clinic, Jacksonville, FL; Department of Neurology (N.Z.), Mayo Clinic, Scottsdale, AZ; Neurorehabilitation Unit (M.F.), IRCCS San Raffaele Scientific Institute; Neurophysiology Service (M.F.), IRCCS San Raffaele Scientific Institute, Milan, Italy; and Laboratory Medicine and Pathology (S.J.P., E.P.F.), Mayo Clinic, Rochester, MN
| | - Paul Elsbernd
- From the Department of Neurology and Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology (L.C., W.O.T., J.J.C., S.A.B., V.R., J.-M.T., Y.G., S.J.P., C.F.L., E.P.F.), Mayo Clinic, Rochester, MN; Vita-Salute San Raffaele University (L.C., F.M., M.A.R., M.F.); Neuroimaging Research Unit (L.C., M.A.R., M.F.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy; Department of Radiology (P.M.), Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN; Department of Neurology (P.E.), San Antonio Military Medical Center, Fort Sam Houston, TX; Neurology Unit (F.M., M.A.R., M.F.), IRCCS San Raffaele Scientific Institute, Milan; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology (A.S.L.-C.), Mayo Clinic, Jacksonville, FL; Department of Neurology (N.Z.), Mayo Clinic, Scottsdale, AZ; Neurorehabilitation Unit (M.F.), IRCCS San Raffaele Scientific Institute; Neurophysiology Service (M.F.), IRCCS San Raffaele Scientific Institute, Milan, Italy; and Laboratory Medicine and Pathology (S.J.P., E.P.F.), Mayo Clinic, Rochester, MN
| | - Vyanka Redenbaugh
- From the Department of Neurology and Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology (L.C., W.O.T., J.J.C., S.A.B., V.R., J.-M.T., Y.G., S.J.P., C.F.L., E.P.F.), Mayo Clinic, Rochester, MN; Vita-Salute San Raffaele University (L.C., F.M., M.A.R., M.F.); Neuroimaging Research Unit (L.C., M.A.R., M.F.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy; Department of Radiology (P.M.), Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN; Department of Neurology (P.E.), San Antonio Military Medical Center, Fort Sam Houston, TX; Neurology Unit (F.M., M.A.R., M.F.), IRCCS San Raffaele Scientific Institute, Milan; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology (A.S.L.-C.), Mayo Clinic, Jacksonville, FL; Department of Neurology (N.Z.), Mayo Clinic, Scottsdale, AZ; Neurorehabilitation Unit (M.F.), IRCCS San Raffaele Scientific Institute; Neurophysiology Service (M.F.), IRCCS San Raffaele Scientific Institute, Milan, Italy; and Laboratory Medicine and Pathology (S.J.P., E.P.F.), Mayo Clinic, Rochester, MN
| | - Jan-Mendelt Tillema
- From the Department of Neurology and Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology (L.C., W.O.T., J.J.C., S.A.B., V.R., J.-M.T., Y.G., S.J.P., C.F.L., E.P.F.), Mayo Clinic, Rochester, MN; Vita-Salute San Raffaele University (L.C., F.M., M.A.R., M.F.); Neuroimaging Research Unit (L.C., M.A.R., M.F.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy; Department of Radiology (P.M.), Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN; Department of Neurology (P.E.), San Antonio Military Medical Center, Fort Sam Houston, TX; Neurology Unit (F.M., M.A.R., M.F.), IRCCS San Raffaele Scientific Institute, Milan; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology (A.S.L.-C.), Mayo Clinic, Jacksonville, FL; Department of Neurology (N.Z.), Mayo Clinic, Scottsdale, AZ; Neurorehabilitation Unit (M.F.), IRCCS San Raffaele Scientific Institute; Neurophysiology Service (M.F.), IRCCS San Raffaele Scientific Institute, Milan, Italy; and Laboratory Medicine and Pathology (S.J.P., E.P.F.), Mayo Clinic, Rochester, MN
| | - Federico Montini
- From the Department of Neurology and Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology (L.C., W.O.T., J.J.C., S.A.B., V.R., J.-M.T., Y.G., S.J.P., C.F.L., E.P.F.), Mayo Clinic, Rochester, MN; Vita-Salute San Raffaele University (L.C., F.M., M.A.R., M.F.); Neuroimaging Research Unit (L.C., M.A.R., M.F.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy; Department of Radiology (P.M.), Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN; Department of Neurology (P.E.), San Antonio Military Medical Center, Fort Sam Houston, TX; Neurology Unit (F.M., M.A.R., M.F.), IRCCS San Raffaele Scientific Institute, Milan; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology (A.S.L.-C.), Mayo Clinic, Jacksonville, FL; Department of Neurology (N.Z.), Mayo Clinic, Scottsdale, AZ; Neurorehabilitation Unit (M.F.), IRCCS San Raffaele Scientific Institute; Neurophysiology Service (M.F.), IRCCS San Raffaele Scientific Institute, Milan, Italy; and Laboratory Medicine and Pathology (S.J.P., E.P.F.), Mayo Clinic, Rochester, MN
| | - Elia Sechi
- From the Department of Neurology and Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology (L.C., W.O.T., J.J.C., S.A.B., V.R., J.-M.T., Y.G., S.J.P., C.F.L., E.P.F.), Mayo Clinic, Rochester, MN; Vita-Salute San Raffaele University (L.C., F.M., M.A.R., M.F.); Neuroimaging Research Unit (L.C., M.A.R., M.F.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy; Department of Radiology (P.M.), Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN; Department of Neurology (P.E.), San Antonio Military Medical Center, Fort Sam Houston, TX; Neurology Unit (F.M., M.A.R., M.F.), IRCCS San Raffaele Scientific Institute, Milan; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology (A.S.L.-C.), Mayo Clinic, Jacksonville, FL; Department of Neurology (N.Z.), Mayo Clinic, Scottsdale, AZ; Neurorehabilitation Unit (M.F.), IRCCS San Raffaele Scientific Institute; Neurophysiology Service (M.F.), IRCCS San Raffaele Scientific Institute, Milan, Italy; and Laboratory Medicine and Pathology (S.J.P., E.P.F.), Mayo Clinic, Rochester, MN
| | - A Sebastian Lopez-Chiriboga
- From the Department of Neurology and Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology (L.C., W.O.T., J.J.C., S.A.B., V.R., J.-M.T., Y.G., S.J.P., C.F.L., E.P.F.), Mayo Clinic, Rochester, MN; Vita-Salute San Raffaele University (L.C., F.M., M.A.R., M.F.); Neuroimaging Research Unit (L.C., M.A.R., M.F.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy; Department of Radiology (P.M.), Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN; Department of Neurology (P.E.), San Antonio Military Medical Center, Fort Sam Houston, TX; Neurology Unit (F.M., M.A.R., M.F.), IRCCS San Raffaele Scientific Institute, Milan; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology (A.S.L.-C.), Mayo Clinic, Jacksonville, FL; Department of Neurology (N.Z.), Mayo Clinic, Scottsdale, AZ; Neurorehabilitation Unit (M.F.), IRCCS San Raffaele Scientific Institute; Neurophysiology Service (M.F.), IRCCS San Raffaele Scientific Institute, Milan, Italy; and Laboratory Medicine and Pathology (S.J.P., E.P.F.), Mayo Clinic, Rochester, MN
| | - Nicholas Zalewski
- From the Department of Neurology and Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology (L.C., W.O.T., J.J.C., S.A.B., V.R., J.-M.T., Y.G., S.J.P., C.F.L., E.P.F.), Mayo Clinic, Rochester, MN; Vita-Salute San Raffaele University (L.C., F.M., M.A.R., M.F.); Neuroimaging Research Unit (L.C., M.A.R., M.F.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy; Department of Radiology (P.M.), Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN; Department of Neurology (P.E.), San Antonio Military Medical Center, Fort Sam Houston, TX; Neurology Unit (F.M., M.A.R., M.F.), IRCCS San Raffaele Scientific Institute, Milan; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology (A.S.L.-C.), Mayo Clinic, Jacksonville, FL; Department of Neurology (N.Z.), Mayo Clinic, Scottsdale, AZ; Neurorehabilitation Unit (M.F.), IRCCS San Raffaele Scientific Institute; Neurophysiology Service (M.F.), IRCCS San Raffaele Scientific Institute, Milan, Italy; and Laboratory Medicine and Pathology (S.J.P., E.P.F.), Mayo Clinic, Rochester, MN
| | - Yong Guo
- From the Department of Neurology and Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology (L.C., W.O.T., J.J.C., S.A.B., V.R., J.-M.T., Y.G., S.J.P., C.F.L., E.P.F.), Mayo Clinic, Rochester, MN; Vita-Salute San Raffaele University (L.C., F.M., M.A.R., M.F.); Neuroimaging Research Unit (L.C., M.A.R., M.F.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy; Department of Radiology (P.M.), Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN; Department of Neurology (P.E.), San Antonio Military Medical Center, Fort Sam Houston, TX; Neurology Unit (F.M., M.A.R., M.F.), IRCCS San Raffaele Scientific Institute, Milan; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology (A.S.L.-C.), Mayo Clinic, Jacksonville, FL; Department of Neurology (N.Z.), Mayo Clinic, Scottsdale, AZ; Neurorehabilitation Unit (M.F.), IRCCS San Raffaele Scientific Institute; Neurophysiology Service (M.F.), IRCCS San Raffaele Scientific Institute, Milan, Italy; and Laboratory Medicine and Pathology (S.J.P., E.P.F.), Mayo Clinic, Rochester, MN
| | - Maria A Rocca
- From the Department of Neurology and Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology (L.C., W.O.T., J.J.C., S.A.B., V.R., J.-M.T., Y.G., S.J.P., C.F.L., E.P.F.), Mayo Clinic, Rochester, MN; Vita-Salute San Raffaele University (L.C., F.M., M.A.R., M.F.); Neuroimaging Research Unit (L.C., M.A.R., M.F.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy; Department of Radiology (P.M.), Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN; Department of Neurology (P.E.), San Antonio Military Medical Center, Fort Sam Houston, TX; Neurology Unit (F.M., M.A.R., M.F.), IRCCS San Raffaele Scientific Institute, Milan; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology (A.S.L.-C.), Mayo Clinic, Jacksonville, FL; Department of Neurology (N.Z.), Mayo Clinic, Scottsdale, AZ; Neurorehabilitation Unit (M.F.), IRCCS San Raffaele Scientific Institute; Neurophysiology Service (M.F.), IRCCS San Raffaele Scientific Institute, Milan, Italy; and Laboratory Medicine and Pathology (S.J.P., E.P.F.), Mayo Clinic, Rochester, MN
| | - Massimo Filippi
- From the Department of Neurology and Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology (L.C., W.O.T., J.J.C., S.A.B., V.R., J.-M.T., Y.G., S.J.P., C.F.L., E.P.F.), Mayo Clinic, Rochester, MN; Vita-Salute San Raffaele University (L.C., F.M., M.A.R., M.F.); Neuroimaging Research Unit (L.C., M.A.R., M.F.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy; Department of Radiology (P.M.), Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN; Department of Neurology (P.E.), San Antonio Military Medical Center, Fort Sam Houston, TX; Neurology Unit (F.M., M.A.R., M.F.), IRCCS San Raffaele Scientific Institute, Milan; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology (A.S.L.-C.), Mayo Clinic, Jacksonville, FL; Department of Neurology (N.Z.), Mayo Clinic, Scottsdale, AZ; Neurorehabilitation Unit (M.F.), IRCCS San Raffaele Scientific Institute; Neurophysiology Service (M.F.), IRCCS San Raffaele Scientific Institute, Milan, Italy; and Laboratory Medicine and Pathology (S.J.P., E.P.F.), Mayo Clinic, Rochester, MN
| | - Sean J Pittock
- From the Department of Neurology and Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology (L.C., W.O.T., J.J.C., S.A.B., V.R., J.-M.T., Y.G., S.J.P., C.F.L., E.P.F.), Mayo Clinic, Rochester, MN; Vita-Salute San Raffaele University (L.C., F.M., M.A.R., M.F.); Neuroimaging Research Unit (L.C., M.A.R., M.F.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy; Department of Radiology (P.M.), Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN; Department of Neurology (P.E.), San Antonio Military Medical Center, Fort Sam Houston, TX; Neurology Unit (F.M., M.A.R., M.F.), IRCCS San Raffaele Scientific Institute, Milan; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology (A.S.L.-C.), Mayo Clinic, Jacksonville, FL; Department of Neurology (N.Z.), Mayo Clinic, Scottsdale, AZ; Neurorehabilitation Unit (M.F.), IRCCS San Raffaele Scientific Institute; Neurophysiology Service (M.F.), IRCCS San Raffaele Scientific Institute, Milan, Italy; and Laboratory Medicine and Pathology (S.J.P., E.P.F.), Mayo Clinic, Rochester, MN
| | - Claudia F Lucchinetti
- From the Department of Neurology and Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology (L.C., W.O.T., J.J.C., S.A.B., V.R., J.-M.T., Y.G., S.J.P., C.F.L., E.P.F.), Mayo Clinic, Rochester, MN; Vita-Salute San Raffaele University (L.C., F.M., M.A.R., M.F.); Neuroimaging Research Unit (L.C., M.A.R., M.F.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy; Department of Radiology (P.M.), Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN; Department of Neurology (P.E.), San Antonio Military Medical Center, Fort Sam Houston, TX; Neurology Unit (F.M., M.A.R., M.F.), IRCCS San Raffaele Scientific Institute, Milan; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology (A.S.L.-C.), Mayo Clinic, Jacksonville, FL; Department of Neurology (N.Z.), Mayo Clinic, Scottsdale, AZ; Neurorehabilitation Unit (M.F.), IRCCS San Raffaele Scientific Institute; Neurophysiology Service (M.F.), IRCCS San Raffaele Scientific Institute, Milan, Italy; and Laboratory Medicine and Pathology (S.J.P., E.P.F.), Mayo Clinic, Rochester, MN
| | - Eoin P Flanagan
- From the Department of Neurology and Mayo Clinic Center for Multiple Sclerosis and Autoimmune Neurology (L.C., W.O.T., J.J.C., S.A.B., V.R., J.-M.T., Y.G., S.J.P., C.F.L., E.P.F.), Mayo Clinic, Rochester, MN; Vita-Salute San Raffaele University (L.C., F.M., M.A.R., M.F.); Neuroimaging Research Unit (L.C., M.A.R., M.F.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan, Italy; Department of Radiology (P.M.), Department of Ophthalmology (J.J.C.), Mayo Clinic, Rochester, MN; Department of Neurology (P.E.), San Antonio Military Medical Center, Fort Sam Houston, TX; Neurology Unit (F.M., M.A.R., M.F.), IRCCS San Raffaele Scientific Institute, Milan; Department of Medical, Surgical and Experimental Sciences (E.S.), University of Sassari, Italy; Department of Neurology (A.S.L.-C.), Mayo Clinic, Jacksonville, FL; Department of Neurology (N.Z.), Mayo Clinic, Scottsdale, AZ; Neurorehabilitation Unit (M.F.), IRCCS San Raffaele Scientific Institute; Neurophysiology Service (M.F.), IRCCS San Raffaele Scientific Institute, Milan, Italy; and Laboratory Medicine and Pathology (S.J.P., E.P.F.), Mayo Clinic, Rochester, MN.
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