Research Article
Joint Involvement in Primary Sjögren’s Syndrome: An Ultrasound “Target Area Approach to Arthritis”
Table 1
Characteristics of patients with primary and secondary Sjögren’s syndromes as well as no-Sjögren controls. Data are presented in median (range) unless otherwise specified.
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More than one focus of lymphocytic infiltration in minor salivary tissue. **Differences between patients with primary and secondary Sjögren’s syndromes. ***Differences between patients with primary Sjögren’s syndrome and no-Sjögren controls. Abbreviations: SS: Sjögren’s syndrome; CRP: C-reactive protein; RF: rheumatoid factor; anti-CCP: antibodies against cyclic citrullinated peptides; ANA: antinuclear antibodies. |