干燥综合征(Sj?gren’s syndrome,SS)是一种以侵犯泪腺、唾液腺等外分泌腺体为主的慢性自身免疫性疾病。涎腺是最常受累的腺体,涎腺的客观检查对SS的诊断有着重要意义。涎腺即唾液腺,由腮腺、颌下腺和舌下腺三大对腺体组成,受累后出现口干燥症、口腔溃疡、腮腺肿大、猖獗性龋齿等众多临床表现,严重影响患者的生活质量。新近发展起来的涎腺超声(salivary gland ultrasonography,SGU)以其 Sjogren’s syndrome (SS) is a chronic autoimmune disease predominantly affecting exocrine glands such as lacrimal gland and salivary gland. Salivary glands are the most commonly involved glands, and the objective examination of salivary glands is of great importance for the diagnosis of SS. The salivary glands, salivary glands, are composed of three pairs of glands, parotid, submandibular gland and sublingual gland, which are characterized by xerostomia, oral ulcer, parotid gland enlargement and rampant caries, which seriously affect the quality of life of patients. The newly developed salivary gland ultrasonography (SGU) in its