RT Journal Article SR Electronic T1 Short-term Repeat Magnetic Resonance Imaging Scans in Suspected Early Axial Spondyloarthritis Are Clinically Relevant Only in HLA-B27–positive Male Subjects JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 202 OP 205 DO 10.3899/jrheum.170171 VO 45 IS 2 A1 Raj Sengupta A1 Helena Marzo-Ortega A1 Dennis McGonagle A1 Alison Wadeley A1 Alexander N. Bennett A1 on behalf of the British Society for Spondyloarthritis YR 2018 UL http://www.jrheum.org/content/45/2/202.abstract AB Objective. Our study investigated the natural history of magnetic resonance imaging (MRI)–determined bone marrow edema over a 12-week period in individuals with suspected axial spondyloarthritis.Methods. There were 109 MRI scans performed on 30 patients who fulfilled the Assessment of Spondyloarthritis international Society inflammatory back pain criteria at baseline and at 4, 8, and 12 weeks.Results. There were 29 patients who completed the study. Only 4 (14%) patients changed from MRI-negative to MRI-positive (all HLA-B27–positive, OR 2.74). Three of 7 (43%) male HLA-B27–positive patients, 1 of 8 (12.5%) HLA-B27–positive female patients, and no HLA-B27–negative patients changed from MRI- negative to -positive.Conclusion. Repeat MRI scans within a 12-week period should be considered in HLA-B27–positive males.