MRI in ankylosing spondylitis: abnormal contrast enhancement in the thoracic spine
We performed Gd-DTPA enhanced MRI in two patients with ankylosing spondylitis (AS), and noticed interesting long T1 and T2 lesions and enhancement in the cephalad and caudal portions of the vertebral bodies in one case, particularly prominent in the ventral and dorsolateral aspects. These seemed to reflect inflammatory changes in active AS (enthesitis and osteitis). Knowledge of these characteristic long T1 and T2 lesions and enhancement may help not only in early diagnosis of AS, but also in differentiation of this from other diseases involving the spine.
Key wordsAnkylosing spondylitis Magnetic resonance imaging Gadfolinium Spine
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