In young patients who have a spinal MRI, lesions are reported in most patients, and similar in males:females. SIJ MRI findings are reported in one out of three patients, being more frequently in males @DiegoBenavent Abst #160 #ACR23 @RheumNow https://t.co/aF9WnP7jpY https://t.co/E9UuZ0sWZm