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Developmental venous anomaly (DVA) in a patient with multiple sclerosis (MS). Axial fluid-attenuated inversion recovery image shows MS (multiple sclerosis) plaques and post-contrast T1-weighted images show enhancing vessels joining the collecting vein (arrows) (A), Developmental venous anomaly (DVA) in a control subject. Post-contrast T1-weighted image shows enhancing vessels joining the collecting vein (arrow) (B).
