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The spinal cord lesions of an AQP4-IgG positive NMOSD patient’s first attack (a), second attack a year later (b) and third attack 22 months later (c) on T2-weighted imaging. The lesions of first and second attack were SSM lesions when it converted to LETM lesion when the third attack.
AQP4-IgG, aquaporin-4 immunoglobulin G; LETM, longitudinally extensive transverse myelitis; NMOSD, neuromyelitis optica spectrum disorder; SSM, short segment myelitis.
