FIGURE 2. Longitudinal gray scale US of the liver demonstrates type II (CE3) liver hydatid cyst with focal splitting of the cyst wall (arrowhead; A). Extended splitting of the cyst wall results in the ‘‘floating membrane’’ (arrows; B and C). A(1), B(1), and C(1), Corresponding line diagrams.
FIGURE 3. Longitudinal gray-scale US of the liver reveals type III (CE2) hydatid cyst of the liver containing multiple fluid-containing cysts representing daughter cysts (A). A(1), Corresponding line diagram.
FIGURE 4. Gray-scale US of the liver reveals type IV (CE4) liver hydatid cyst (A) seen as a predominantly hyperechoic complex heterogenous mass (arrowheads). A variable echo pattern of hypoechoic and hyperchoic regions is shown (arrowheads) (B and C). These cysts do not show increased vascularity on color flow Doppler (B). A(1) and B(1), Corresponding line diagrams.