Presentation
Low back pain.
Patient Data
Age: 50 years
Gender: Male
From the case:
Ankylosing spondylitis
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Info
Typical appearance of bamboo spine with multiple syndesmophytes between the vertebral bodies are seen. There is also a single central radiodense line related to ossification of supraspinous and interspinous ligaments which is called dagger sign.
Additionally bilateral sacroiliac ankylosis is evident.
Several hyperdense stones are present at bilateral renal lodges.
Case Discussion
Typical bamboo spine and dagger sign in a known patient with ankylosing spondylitis. The dagger sign is a single central radiodense line on frontal radiographs related to ossification of supraspinous and interspinous ligaments which is seen in ankylosing spondylitis.
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