Oral and maxillofacial radiologySonographic diagnostic criteria for screening Sjögren’s syndrome
Section snippets
Patients
Patients who visited our hospital with suspicions of Sjögren’s syndrome and who were examined both by sonography and by sialography constituted the study population. Two groups of patients were studied:
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Group 1: Seventy-nine subjects observed for possible Sjögren’s syndrome from January 1999 to October 2001. Subjects comprised 7 males and 72 females with a mean age of 50.8 years. Sonographic criteria were established using images from this group of patients who were determined to have Sjögren’s
Results
Forty-three of 79 Group 1 subjects were positive for Sjögren’s based on the revised Japanese criteria.3 Table III shows sensitivity, specificity, and accuracy for each sonographic finding in this Group. Those classified as “probable” were included in the “negative” set for data analysis purposes. The finding of “multiple hyperechoic lines and/or spots” in parotid glands (P2 in Table III) showed high sensitivity, specificity, and accuracy. The findings of “multiple hypoechoic areas surrounded
Discussion
This study was carried out to establish easily applied sonographic criteria for Sjögren’s syndrome. Inhomogeneity had previously been reported to be the most important sonographic finding; however, it is sometimes difficult to detect whether the gland is homogeneous or not. Hence, we determined more concrete findings of inhomogeneity that are relatively easy to perceive: (1) multiple hypoechoic areas, (2) multiple hyperechoic lines and/or spots, and (3) multiple hypoechoic areas surrounded by
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