Cross-sectional comparison of ultrasonography scoring systems for primary Sjogren's syndrome.

To choose the best ultrasound scoring system for clinic practice, ultrasound was performed for 94 cases with suspected primary Sjogren's syndrome (pSS) and 3 US scoring systems created by Hocevar, Salaffi, Millic were employd to assess for bilateral parotid glands and submandibular glands. The US evaluation was blinded to the final diagnosis of pSS according to 2002 classification criteria. 44 cases were finally diagnosed with pSS, 14 were diagnosed with secondary Sjogren's syndrome, and 36 were diagnosed with Sicca syndromes. Hocevar's method had the best likelihood ratio and accuracy, but Milic's scoring system was recommended for its excellent balance between the diagnostic value and inter/intra observation agreement value.