Multiple foci of abnormal enhancement in the arterial phase in the liver suggests that multiple foci of abnormal enhancement in the arterial phase are found in the liver, and the possibility of multiple intrahepatic cancerous foci is high, but it does not exclude the possibility of other lesions, such as liver abscess, liver hemangioma, and so on. Enhancement of hepatocellular carcinoma on CT is characterized by fast-in-fast-out type, i.e., the lesions show uneven and obvious enhancement in arterial phase, and the enhancement of the lesions in venous phase decreases rapidly. If there are primary cancer foci in the clinic, it is more likely that the multiple arterial phase abnormal enhancement foci in the liver are hepatocellular carcinoma. In addition, hepatic hemangioma may also show abnormal enhancement in the arterial phase. Multiple foci of abnormal enhancement in the arterial phase in the liver need to be combined with the clinical evolution of the disease or other examination results to make a comprehensive judgment, such as alpha-fetoprotein examination, biopsy pathology examination, etc., in order to determine whether the lesion is benign or malignant.