Background Salivary gland involvement is a hallmark of disease in primary Sjögren’s syndrome (pSS). This reflected by the prominent role positive biopsy within ACR-EULAR classification criteria, which solely based on focus score (FS) 1 . In pSS all salivary glands might be involved process. For this reason, both labial and parotid biopsies can used for diagnosis evaluation. Although nearly clin...