Parotid gland ultrasonography in Sjögren's syndrome

Each image is a longitudinal view of the left parotid gland. The asterisks mark the inferior border of the parotid gland.
(A) Image from a patient with sicca symptoms but no evidence of Sjögren's syndrome. Note the homogeneity of the parenchymal tissue.
(B) Image from a patient with Sjögren's syndrome. Note the numerous ovoid hypoechoic foci (arrow) in the glandular parenchyma, many bounded by hyperechogenic linear bands (arrowhead).