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Ankylosing spondylitis and diffuse idiopathic skeletal hyperostosis
1 What is ankylosing spondylitis? Ankylosing spondylitis (AS) is a seronegative inflammatory rheumatic disease that affects the sacroiliac joints, spine, and peripheral joints. Eponyms for AS include Marie-Strümpell disease and von Bechterew disease. AS is a subtype of a group…