Reversible paraspinal muscle hyperintensity in anti-MOG antibody–associated transverse myelitis

Myelin oligodendrocyte glycoprotein immunoglobulin G (anti-MOG-IgG) has been recently found to be associated with some forms of idiopathic inflammatory demyelinating CNS disorders. In a preliminary study from India, recurrent optic neuritis and isolated longitudinally extensive transverse myelitis were identified as the common phenotypes.1 The clinical and radiologic features of this newly discovered subset of autoimmune disorders are only beginning to be understood. In this context, we would like to draw attention to an unusual and hitherto unreported association noticed in a patient with anti-MOG-IgG–associated myelitis.