Weak intensified shadow in the right lobe of liver is not necessarily liver metastasis. Liver metastasis refers to liver metastatic cancer, which may only appear if there is primary tumor in other parts of the body. Weak intensified shadow in the right lobe of liver can also be seen in hepatic hemangioma and primary hepatocellular carcinoma and so on. 1. Liver metastatic cancer: patients with liver metastatic cancer can have weakly intensified shadow in the right lobe of the liver in enhanced CT examination, but these patients usually have primary tumors, such as gastric cancer, colorectal cancer, lung cancer, breast cancer, pancreatic cancer and so on. 2. Hepatic hemangioma: Hepatic hemangioma is a kind of benign hepatic tumor originated from endothelial cells of blood vessels, which is a kind of angiomatous hyperplasia or vasodilatation caused by various reasons, and when patients with this disease undergo CT with enhancement, the right lobe of the liver can also show weak intensified shadow. 3. Primary hepatocellular carcinoma: primary hepatocellular carcinoma is a kind of epithelial malignant tumor originated from liver, which is divided into hepatocellular carcinoma, cholangiocellular carcinoma and mixed hepatocellular carcinoma, and patients with primary hepatocellular carcinoma can also have the manifestation of weakly intensified shadow on the right lobe of the liver when they undergo the enhanced CT. In addition to the above diseases, other diseases may also cause patients to have weak enhancement in the right lobe of the liver, so it is recommended to consult doctors in time to find out the causes and treat them.