Figure 2

(Patient 5). a. Ultrasonography of the right lobe. A predominantly solid tumor. Internal echo shows homogenity in the solid area and interspersed cystic-like areas. (Power Doppler showed intense blood signals in these cystic-like areas). b Ultrasonography of the right lobe and the jugular vein. A solid mass (arrow on the left), that is, tumor thrombus, is shown in the lumen of the jugular vein. The lumen of the middle thyroid vein is completely occupied with tumor thrombus (arrow on the right). c. Power Doppler ultrasonography. Marked chaotic vascularity. d Hematoxylin & eosin staining. A rich vascular network.