The following tests are needed to differentiate between hepatocellular carcinoma and hepatic hemangioma: The imaging characteristics of hepatocellular carcinoma CT are low density on plain scan and “fast in-fast out” of contrast agent on enhanced scan, while the characteristics of hepatic hemangioma are low density on plain scan and “fast in-fast out” of contrast agent on enhanced scan, with contrast agent gradually filling up from the periphery to the center of the tumor. 2.AFP test: 70-80% of liver cancer patients have elevated AFP, while patients with hemangioma definitely do not have high AFP. 3.Hepatitis B and half: Hepatitis B is the main culprit of liver cancer, if there is any problem with hepatitis B and half, it should be highly suspected that it may be liver cancer.