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The prevalence of antinuclear antibodies (ANA) in relapsing polychondritis (RP) has been recently reported by Zeuneret al to be as high as 66%,1usually in a low titre with a speckled pattern. We report here on our experience of ANA testing in patients with RP.
The charts of 180 patients followed up in our institution fulfilling the criteria for RP proposed by Michet et al 2 have been recently retrospectively reviewed, with special focus on dermatological manifestations and their relation with myelodysplasia.3 ,4 This aim led us to exclude 36 patients because the association of RP with potentially confounding diseases,3 such as systemic lupus erythematosus (SLE) present in nine, mixed connective tissue disease (MCTD) in …