Sacroiliitis

Case contributed by Bahman Rasuli
Diagnosis almost certain

Presentation

Low back pain for several months.

Patient Data

Age: 30 years
Gender: Male
mri

Abnormal subchondral bone marrow signal involving both surfaces of the sacroiliac joint and displays low signal on T1 and high signal on STIR images depicting an inflammatory process.

Joint space of both ligamentous and synovial parts of the joints is preserved.

 No subchondral sclerosis or cystic changes are noted.

 The shape and signal intensities of the muscles attachments also are normal.

Case Discussion

MRI findings are consistent with bilateral sacroiliitis.

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