Varied sonographic patterns in Echinococcus liver disease.

Echinococcus granulosus has been an uncommon disease in the United States. Cases may appear unexpectedly because of increased immigration from endemic areas. Over the past 3 years, 10 cases of hydatid liver disease were diagnosed by sonography in our institution. Sonography is a simple noninvasive method of early diagnosis even when clinical signs are nonspecific. The sonographic patterns of this condition are described.