Comparison of labial and sublingual salivary gland biopsies in the diagnosis of Sjögren's syndrome.

This study was designed to compare labial and sublingual salivary gland biopsies in the diagnosis of Sjögren's syndrome (SS). Fourteen labial and 29 sublingual specimens were considered positive. There was a better correlation between infiltration of the ductal structure and the focus score in the sublingual salivary gland biopsy than in the labial salivary gland biopsy. Use of sublingual salivary gland biopsy as an additional diagnostic tool in SS is therefore suggested.