MOG and transverse myelitis: Moreover, the MOG-seropositive group was not more likely to present with typical imaging features of ADEM (P = 0.090) such as large, diffusely asymmetrically distributed, poorly demarcated white matter-dominated patchy lesions and extensive involvement of deep gray matter and infratentorial areas and some parts of the spinal cord, which often presented as longitudinal extensive transverse myelitis (LETM) (Figures 2A–G).