Sacroiliitis

DDx

Causes or mimics of sacroiliitis: , , , inflammatory bowel disease, osteitis condensans ilii, ,
Diffuse idiopathic skeletal hyperostosis (in elderly)
Synovitis-acne-pustulosis-hyperostosis-osteitis syndrome
Lumbar disk herniation, , or facet joint degenerative arthritis
Ochronosis ()

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