The liver is a common non-exocrine target in primary Sjögren's syndrome: a retrospective review.

BACKGROUND

The autoimmune destruction of exocrine glands that defines primary Sjögren's syndrome (1 degrees SS) often extends to non-exocrine organs including the liver. We aimed to determine the prevalence of liver disease in patients with 1 degrees SS and to evaluate the association of this complication with other non-exocrine features and serologic markers of autoimmunity and systemic inflammation.

METHODS

We reviewed 115 charts of patients with 1 degrees SS and further analyzed the 73 cases that fulfilled the European Epidemiology Center Criteria, seeking evidence for clinical and subclinical liver disease.

RESULTS

Liver function tests had been determined in 59 of the 73 patients. Of those, 29 patients (49.1%) had abnormal liver function tests including 20.3% with clinically overt hepatic disease. Liver disease was the most common non-exocrine feature in this cohort. Risk factors for abnormal liver function tests were distributed similarly between the patients with and without liver disease. In 60% of patients with abnormal liver function tests no explanation for this complication was found except for 1 degrees SS. Liver involvement was significantly more common in 1 degrees SS patients who also had evidence of lung, kidney and hematological abnormalities. Patients with abnormal liver function tests were also more likely to have an elevated sedimentation rate and a positive anti-ENA during the course of their disease.

CONCLUSION

Liver involvement is a common complication in 1 degrees SS. Its presence correlates with systemic disease. We consider that this complication should be routinely sought in patients with 1 degrees SS, especially when a positive anti-ENA or evidence of systemic inflammation is found.