Newly diagnosed seropositive rheumatoid arthritis in a 52-year-old man superimposed on long-standing ankylosing spondylitis during secukinumab treatment
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Rheumatoid arthritis (RA) and ankylosing spondylitis (AS) are severe chronic inflammatory joint diseases with different immune-mediated mechanisms playing a role in their pathogenesis. Rheumatoid arthritis is an erosive arthritis of peripheral joints and AS is... ...
