Pictorial review of hepatic echinococcosis: Ultrasound imaging and differential diagnosis

Figure 4 Contrast-enhanced ultrasound images of hepatic alveolar echinococcosis. A: A 55-year-old male patient presenting with a hemangioma-like hepatic alveolar echinococcosis (HAE) liver lesion, exhibiting peripheral “rim-like” enhancement in the arterial phase (AP) on contrast-enhanced ultrasound (CEUS) (the yellow arrow), with no internal enhancement; B: A 29-year-old female patient presenting with a metastasis-like HAE liver lesion, exhibiting peripheral “rim-like” enhancement in the AP on CEUS (the yellow arrow), with no internal enhancement; C: A 53-year-old female patient presenting with a hailstorm HAE liver lesion, exhibiting peripheral “rim-like” enhancement in the AP on CEUS (the yellow arrow), with no internal enhancement; D: A 50-year-old male patient presenting with an ossified HAE liver lesion, with no obvious enhancement in the AP, portal venous phase, or late phase; E: A 40-year-old female patient presenting with a pseudocystic HAE liver lesion, exhibiting peripheral “rim-like” enhancement in the AP on CEUS (the yellow arrow), but lacking internal enhancement.