| Summary: | Objective: Remitting seronegative symmetrical synovitis with pitting edema (RS3PE) is a rare disorder characterized by pitting edema, the onset of acute polyarthritis, and negative rheumatoid factor. The absence of joint erosion and good long-term response to low-dose steroids are its other characteristics. The present study aimed to evaluate the characteristics and accompanying conditions of RS3PE for contributing to the literature on the issue.
Material and method: This is cross-sectional descriptive study was carried out in a rheumatology clinic between January 2019- October 2020. Fifteen patients over 18 diagnosed with RS3PE were included in the study.
Results: Of 15 patients diagnosed with RS3PE, seven were female, and eight male. The following comorbid disorders were present: relapsing polychondritis, scleroderma, seropositive rheumatoid arthritis, gout, monoclonal gammopathy of unknown significance, and primary myelofibrosis. Most patients other than the ones who have hematological malignities and those diagnosed with relapsing polychondritis responded rapidly to steroids, and no recurrence occurred.
Conclusion: RS3PE may be associated with neoplasia, drugs, and various rheumatismal conditions, suggesting that it may be heterogeneous and considered a paraneoplastic rheumatic disease. The rare occurrence of this syndrome leads clinicians to miss it commonly. It is essential to increase awareness of this entity among clinicians.
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