Bilateral sacroiliac pain
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Abnormal narrowing, ankylosing and bone bridges of the synovial portion of both sacroiliac joints. Associated subchondral fat signal involves both surfaces of the joint and displays a high signal on T1 and T2WI with low signal on fat-suppressed images, denotes fatty metaplasia. No abnormal bone marrow edema within neither iliac nor sacral surfaces of the joint.
Our case here shows periarticular fat deposition with bony bridges/ankylosis, those together with subchondral sclerosis and erosion are typical features of chronic Sacroiliitis reflecting structural damage of the sacroiliac joints secondary to previous inflammation.
- 1. Tsoi C, Tsoi GJF, Tsoi LRKL, Tsoi WPCH, Tsoi TLS. Imaging of sacroiliitis: Current status, limitations and pitfalls. (2018) Quantitative Imaging in Medicine and Surgery. 9 (2): 318-335. doi:10.21037/qims.2018.11.10 - Pubmed
- 2. MRI findings of active and chronic sacroiliitis in light of recent ASAS criteria for diagnosing axial spondyloarthritis: what the radiologist should know. doi:10.1594/ecr2012/C-1955