21-year-old female patient with lower back and left hip pain. Evaluate for sacroiliitis. There is no increased signal on T2-weighted images in the sacroiliac joints. There is no abnormal enhancement on postcontrast images. Bone marrow signal is within normal limits. The intraperitoneal structures in the pelvis are unremarkable for patient's age.
No evidence of sacroiliitis in either sacroiliac joint.