Relapsed primary extraskeletal osteosarcoma of liver: A case report and review of literature

Figure 1 Imaging examination. A: Liver ultrasound: A giant mixed echogenic mass (as indicated by the red arrow, approximately 18 cm × 11 cm × 12 cm) was observed in the right lobe of the liver with poorly defined boundary, irregular morphology, and uneven internal echoes. The mass was mainly cystic, with multiple solid parts inside. CDFI: A small number of blood flow signals were visible in and around the mixed echogenic mass, and the intrahepatic and right hepatic veins were compressed and offset; B: Enhanced computed tomography (CT) scans: The liver was enlarged and there was a large cystic-solid mass (as indicated by the red arrow, approximately 17 cm × 13 cm × 12 cm) in the right hepatic lobe with irregular morphology, unclear boundary, uneven attenuation, and CT values ranging from 11 to 62 HU. The solid component of the mass was mildly to moderately enhanced. The arterial branches were observed in the mass. The intrahepatic and right hepatic veins and the right anterior branch of the portal vein were occluded.