In early axSpA vs non-axSpA CBP, 2 year spinal x-ray progression was minimal in both groups. But on MRI, fat lesions increased significantly in axSpA (0.16 units/yr vs –0.02), with 15% having ≥3 lesions at 2 year vs 1% in non-axSpA. Fat lesions may signal early structural https://t.co/zvgU1Gt0po