A complementary comment on primary hepatic angiosarcoma: A case report

Figure 1 Computed tomography. A and B: Contrast-enhanced computed tomography, in the venous phase, a 15 mm × 16 mm hyperdense tumor was observed in liver segment 4 with blurred contours in places.

Figure 2 Magnetic resonance imaging. A-C: In magnetic resonance imaging (MRI), the in-phase (A) and out-phase (B) images of the liver segment 4 obtained by the “Dual echo” method of the tumor with faint contours; no significant signal loss was observed when both sequences were compared. In the fat-suppressed T2-weighted MRI image (C), no significant signal loss was also present (findings to indicate absence of fatty content).

Figure 3 A 16 mm diameter lesion located at the segment 4. A and B: The lesion has mild diffusion restriction on diffusion-weighted images and apparent diffusion coefficient maps; C: It is hypointense in the precontrast phase; D: It showes strongperipheral enhancement in the arterial phase; E: Continues toenhance in venous phase; F: The lesion is seen relatively hypointense in the hepatobiliary phase images (20^th min). The diagnosis was confirmed by pathology as fat-poor angiomyolipoma.