Organ manifestations and laboratory variables | Number of patients (%) |
Articular involvement1-150 | 17 (77) |
Renal involvement† | 4 (18) |
Bronchitis sicca | 4 (18) |
Pulmonary fibrosis | 2 (9) |
Raynaud's phenomenon | 6 (27) |
Skin vasculitis | 3 (14) |
MALT lymphoma in parotid gland | 2 (9) |
Anaemia‡ | 6 (27) |
Hypergammaglobulinaemia§ | 15 (68) |
Antibody positivity | |
Anti-SSA | 14 (64) |
Anti-SSB | 9 (41) |
IgM rheumatoid factor | 18 (82) |
Antinuclear antibody | 18 (82) |
↵1-150 Clinically evident arthritis or persistent arthralgia without objective physical signs. †Chronic tubulointerstitial nephritis or renal tubular acidosis. ‡Haemoglobin <100 g/l not attributable to causes other than SS. §γ globulin >16 g/l.