From the case: Ankylosing spondylitis

X-ray
Frontal
Modality: X-ray (Frontal)

- “ Typical appearances of ankylosing spondylitis. ”

Used in the following article:

  • Dagger sign (spine) - “ The dagger sign is a radiographic feature seen in ankylosing spondylitis as a single central radiodense line on frontal radiographs related to oss...”

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