Incidental bone findings in a patient imaged for other reasons.
CT Abdomen and pelvis (selected images - bone window)
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Selected images demonstrating spine ankylosis involving continuously all the thoracolumbar contemplated vertebral bodies. There is also fusion of both sacroiliac joints.
2 case question available
Ankylosing spondylitis is the most common seronegative spondyloarthritis, with a strong male predilection.