Fig. 1

Hepatic alveolar echinococcosis (HAE). a Baseline ultrasound image shows a nodule with mixed echogenicity in the right lobe of the liver that is 5.8 cm in diameter. b On CEUS, arterial phase image obtained 19 s after administering the contrast agent shows a rim-like hyperenhancement of the lesion. c - d Portal and late phase images obtained 96 s and 129 s after administering the contrast agent, respectively. The nodule is hypoechoic with respect to the surrounding liver