Abdominal and back pain. Evaluate for sacroiliitis. There is sclerosis along the sacroiliac joints bilaterally, predominantly involving the ilia. While this could represent osteitis condensans ilii, the sacroiliac joints do appear slightly narrowed, raising the possibility of a chronic sacroiliitis. These findings appear to have slightly progressed compared with the previous study. If further imaging is clinically warranted, MRI with and without contrast may be considered. An IUD is noted in the pelvis. A curvilinear metallic density overlying the right lower quadrant of the abdomen may represent a staple.
Extensive sclerosis along the sacroiliac joints, which may represent osteitis condensans ilii, however the sacroiliac joints themselves appear slightly narrowed, suggesting chronic sacroiliitis. If clinically indicated, this can be further evaluated with MRI of the sacroiliac joints with and without contrast.