Fig. 2From: Salivary gland ultrasonography: a highly specific tool for the early diagnosis of primary Sjögren’s syndromeParenchymal inhomogeneity in the parotid glands demonstrated by ultrasonography. a Normal parotid gland (grade 0). b Parotid gland with mild unspecific inhomogeneity (grade 1). c Parotid gland with evident inhomogeneity (grade 2). d Parotid gland with gross inhomogeneity (grade 3)Back to article page