Influential factors and formation of extrahepatic collateral artery in unresectable hepatocellular carcinoma

Figure 1 A and B: the same case. A: ECA of HCC originated from right renal artery (arrow); B: Tumor was fed by hypertrophy ECA from right renal artery (arrow).

Figure 2 A: Pro-chemoembolization, enhanced CT scan showed ECA of HCC under subcapsule of liver (arrow); B: Ethiodized oil stayed at tumor area via the ECA of HCC after chemoembolization.

Figure 3 ECA of HCC originated from right inferior phrenic artery (arrow).

Figure 4 ECA (arrowhead)of HCC originated from omental artery (arrow).