1995
DOI: 10.1007/bf02208154
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Coexisting rheumatoid arthritis and ankylosing spondylitis discussion of 3 cases with review of the literature

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Cited by 24 publications
(30 citation statements)
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“…Anti-CCP were also present in other rheumatic conditions, being found in 10.6% of patients with psoriatic arthritis and 20.9% of patients with unclassified rheumatism in another study. 21 There are also case reports of concomitant diagnoses of seropositive RA and bilateral SII in some patients, 22,23 and the authors suggested that the prevalence of SpA features in patients with RA may be much higher than previously recognized.…”
Section: Discussionmentioning
confidence: 99%
“…Anti-CCP were also present in other rheumatic conditions, being found in 10.6% of patients with psoriatic arthritis and 20.9% of patients with unclassified rheumatism in another study. 21 There are also case reports of concomitant diagnoses of seropositive RA and bilateral SII in some patients, 22,23 and the authors suggested that the prevalence of SpA features in patients with RA may be much higher than previously recognized.…”
Section: Discussionmentioning
confidence: 99%
“…The influence of HLA-B27 antigen on the course of RA and the influence of HLA-DR4 on the course of AS is not clear. However, previous studies suggested that there is no erosive polyarthritis in RF positive AS patients, and sacroiliac joint involvement is not commonly seen in the positive HLA-B27 RA patients [4]. Some authors have suggested that AS and RA have identical or similarly causes, because of the various genetic backgrounds that lead a patient to develop AS or RA.…”
Section: Discussionmentioning
confidence: 99%
“…In contrast, AS was not associated with RA or SLE [21]. Information about the association of SpAs and RA is scarce, and few case reports have been published [2224]. In 1981, one study including 184 patients with AS or RS showed that five of them had concomitant diagnostic of RA and two of these five patients presented also with Felty's syndrome [25].…”
Section: Discussionmentioning
confidence: 99%