Abstract
Retropharyngeal calcific tendinitis, also known as calcific tendinitis of the longus colli muscle, was first described by Hartley in 1964. It is caused by deposition of calcium hydroxyapatite crystals in the longus colli muscles from C1 to C3. Retropharyngeal calcific tendinitis is diagnosed ra-diologically by the detection of amorphous calcification and prevertebral soft tissue swelling. Twelve cases of retro-pharnygeal calcific tendinitis have been reported in the Korean literature, but no cases with ankylosing spondylitis. In this case, we report an unusual case of retropharyngeal calcific tendinitis with ankylosing spondylitis.
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