Low back pain Mild osteoarthritis affects the sacroiliac joints. A small focus of increased signal intensity is seen within the left ilium. Following contrast administration, there is a mild amount of increased enhancement of the left SI joint but the pattern is not suggestive of sacroiliitis and is most likely degenerative in nature. There is otherwise no abnormal enhancement of the visualized SI joints.
Mild osteoarthritis of the sacroiliac joints without evidence of sacroiliitis.