Spinal H-Sign in Syphilitic Myelitis Mimicking MOGAD. Akrivaki A, Karamanidis S, Dimitriadou E-M, Theodorou A, Kitsos D, Tzanetakos D, Tzartos JS, Tsivgoulis G, Giannopoulos S Neurologist. 2026 Jun 01. PMID: 42224436. Abstract CommentRecommendBookmarkWatch