Primary hepatic angiosarcoma: A case report

Figure 1 Contrast-enhanced computed tomography and contrast-enhanced magnetic resonance imaging reveal multiple low-density lesions in the liver with slightly low enhancement. A: Contrast-enhanced computed tomography; B: Contrast-enhanced magnetic resonance imaging.

Figure 2 Conventional ultrasound. A and B: Multiple intrahepatic hyperechoic nodules with unclear boundaries, loose structures, vascular-like structures (A) and anechoic areas (B).

Figure 3 Contrast-enhanced ultrasound reveals nodular peripheral enhancement in the arterial and portal phases and low-enhancement and non-enhanced areas in the late phase. A: Nodular peripheral enhancement; B: Non-enhanced area; C: The arterial phase showed low enhancement at 13 s; D: The portal vein was cleared at 58 s.

Figure 4 Histopathology reveals angiosarcoma of vascular origin. A: Obvious pleomorphic and heterotypic tumor cells arranged in clusters (magnification 100 ×); B: Immunohistochemical staining (magnification 100 ×) reveals CD31 positivity.