title: Multiple sialolithiasis in the parotid gland with Sjögren's syndrome and its sonographic findings--report of 3 cases.
abstract: We present 3 cases of Sjögren's syndrome in which multiple sialolithiasis were observed in the parenchyma of the parotid gland. The sonographic examinations showed microliths that were observed as hyperechoic spots. Some of the microliths were accompanied with comet sign, however most of them showed no particular posterior echoes. None of them showed acoustic shadows, which are normally observed in cases with sialolithiasis. We were able to prove that some of the hyperechoic spots observed sonographically in patients with severe Sjögren's syndrome were microliths. Although these multiple microliths are rarely detected, they may exist potentially in higher frequency in patients with severe Sjögren's syndrome.
authors.affiliation: Dept. of Oral and Maxillofacial Radiology, Faculty of Dental Science, Kyushu University, Fukuoka, Japan. shimizu@rad.dent.kyushu-u.ac.jp
authors.forename: Mayumi
authors.initials: M
authors.lastname: Shimizu
authors.forename: Kazunori
authors.initials: K
authors.lastname: Yoshiura
authors.forename: Eiji
authors.initials: E
authors.lastname: Nakayama
authors.forename: Shigenobu
authors.initials: S
authors.lastname: Kanda
authors.forename: Seiji
authors.initials: S
authors.lastname: Nakamura
authors.forename: Yukiko
authors.initials: Y
authors.lastname: Ohyama
authors.forename: Norifumi
authors.initials: N
authors.lastname: Nakamura
mesh_terms: D003287:Contrast Media; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008875:Middle Aged; D010305:Parotid Diseases / Q000000981:diagnostic imaging*; D011862:Radiography, Panoramic; D012465:Salivary Duct Calculi / Q000000981:diagnostic imaging; D015494:Salivary Gland Calculi / Q000000981:diagnostic imaging*; D012796:Sialography; D012859:Sjogren's Syndrome / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography
chemical_list: D003287:Contrast Media