The chances that hypodense shadow of liver is liver cancer are not high because hypodense shadow may also indicate diseases such as liver abscess, liver hemangioma, liver adenoma, etc. Further examination is needed to clarify the cause of the disease. Liver density shadow is the result of computed tomography (CT) scanning of the liver, and the appearance of low density shadow suggests that there are diseases in the liver, and common diseases include liver abscess, hepatic hemangioma, hepatic adenoma and hepatocellular carcinoma, etc. However, it is not possible to make a clear diagnosis of the disease with plain CT, and it is necessary to carry out enhanced CT examination and combine with the clinical manifestation, laboratory examination and puncture biopsy to assist in the diagnosis. In addition to the low-density shadow of the liver, clinical manifestations of hepatocellular carcinoma often include discomfort in the liver area, abdominal distension, diarrhea, jaundice, etc. Laboratory examination can find abnormally high alpha-fetoprotein, and puncture biopsy can find tumor cells.