Hydatid bone disease is very rare, accounting for only 0.5%-4% of all the cases of hydatidosis. Moreover,
bone hydatidosis is difficult to diagnose correctly using preoperative imaging methods. Recently, we used
ultrasonography to evaluate one patient with hydatid disease in the sternoclavicular joint, which was infected
by the larvae of Echinococcus multilocularis. The main ultrasonographic findings were as follows:
multilocular cystic formation, calcification, and bone destruction. We think that ultrasonography is one of the
useful diagnostic aids for cases having osseous lesions.