1992 - Vol.19
（0288 - 0291）
Ultrasonic Examination for Sialolithiasis
Minoru HIRANO1, Ei UENO3, Hiroko S. TSUNODA2, Yuji AIYOSHI3
1Endocrine Surgical Group, University of Tsukuba, 2Radiology Group, University of Tsukuba, 3Institute of Clinical Medicine, University of Tsukuba
Sialolithiasis, Ultrasonography, Sialography
Sialolithiasis is the formation of a calcific mass or masses in the salivary glands or duct system. It is a common disease of the salivary glands. We carried out ultrasonic examination of 17 cases that were diagnosed as sialolithiasis by pathological examinations. Salivary calculi were recognized as hyperechoic masses accompanied by posterior acoustic shadows in 16 cases. Only one case was calculus not detected. Parenchyma of the salivary glands had hypoechoic and heterogenic areas in 8 cases. These changes of parenchyma were probably caused by inflammation due to salivary calculus. Because it is simple, noninvasive, and provides an accurate diagnosis, ultrasonic examination is very useful for sialolithiasis.