CT findings of parotid gland in Sj?觟gren’s syndrome
DING Chang-wei1, LIU Dong-wu2, XUE Hong-xia1, CUI Hua-dong1, WANG Hong-wei1, GUO Qi-yong1
1.Shengjing Hospital of China Medical University, Shenyang 110004, China; 2.Department of Rheumatology and Immunology, Affiliated Hospital of Liaoning University of Traditional Chinese Medicine, Shenyang 110032, China
Abstract：Objective: To investigate CT findings of parotid gland in Sj?觟gren’s syndrome(SS). Methods: Thirteen cases of clinical confirmed SS patients were enrolled and underwent parotid gland CT scan. Fourteen cases of patients who underwent neck CT scan and have no parotid disease were selected as the control group. The imaging features assessed mainly included heterogeneity, diffuse fatty tissue deposition, density of parotid gland parenchyma and calcification. Independent sample t test was used in comparison of CT values between the two groups. Results: Parotid glands of control group showed even low density. However, it was uneven for bilateral parotid glands with diffuse fatty tissue infiltration. The density of parotid gland parenchyma increased. 10 parotid glands of 5 patients showed diffuse multiple punctate calcification. CT value of parotid gland parenchyma[(-3.42±24.11)HU and (-24.11±20.32)HU, respectively(P=0.001)] showed statistical differences between SS and control group. Conclusion: Diffuse infiltration of adipose tissue and increased parotid gland density are characteristic CT manifestations of parotid gland in SS patients. Characteristic diffuse punctate calcification can also be seen. CT can be used as a screening of SS.
2015, Vol. 26 
