[Ultrasound image of an echinococcus daughter cyst in the gallbladder].

By the case presented, which is a clear example of a daughter cyst of an echinococcus in the gall bladder lumen, we have extended our knowledge of the possibility of ultrasound for demonstration of abdominal pathology. Besides the well-known sonographic picture of the liver echinococcus, we now know that we are in certain cases in a position to represent also the echinococcus daughter cyst in the biliary tree. Characteristic is its annular pattern. In cases like this one, we give ultrasound preference over the ERCP and CT.