Bilateral Pleural Effusions as an Initial Presentation in Primary Sjögren’s Syndrome

Table 1

Autoantibody and immunological profile.

	Value	Normal value	Unit
Rheumatoid factor	15	0–10	IU/L
IgG	2693	870–1700	mg/dL
IgG4	35.4	4.8–105	mg/dL
IgA	525	110–410	mg/dL
IgM	194	33–190	mg/dL
Antinuclear antibody	X320	<40
Homogenous	X320	—
Speckled	X320	—
Anti-ds-DNA antibody	10	<12	IU/mL
Anticardiolipin antibody (IgM)	1.2	<3.5	IU/mL
Anticardiolipin antibody (IgG)	8	<10	IU/mL
Lupus erythematosus test	Negative	—
Lupus anticoagalant	1.05	<1.3	sec
Preneutralization	32.7	—	sec
Postneutralization	31.2	—	sec
Antiribonucleoprotein; antibody	Negative	—
Anti-Sm antibody	Negative	—
Anti-Sjögren’s syndrome-A antibody	X256	—
Anti-Sjögren’s syndrome-B antibody	Negative	—
Proteinase-3 antineutrophil cytoplasmic antibody	<10	<10	EU
Myeloperoxidase antineutrophil cytoplasmic antibody	<10	<20	EU
Serum complement level	40.8	25–48	CH50/mL
C3	93	86–160	mg/dL
C4	19	17–45	mg/dL
Soluble interleukin 2 receptor	1550	145–519	IU/mL