Low-density foci in the right lobe of the liver may be associated with diseases such as liver cysts, hepatic adenomas, and hepatocellular carcinoma, which are treated mainly by drugs and surgery. 1. Liver cysts are cystic lesions in the liver caused by various pathogenic factors. Its CT scan mainly shows single or multiple rounded low-density areas with smooth borders. If there is no obvious discomfort, it can be left untreated for the time being; if the cysts are large or symptomatic, it is recommended to undergo surgical treatment, and the surgical methods include hepatic cyst open drainage and partial hepatectomy. 2. Hepatic adenoma is a benign liver tumor, which is relatively rare. On CT, it usually appears as a low-density or isodense mass with clear boundary, uniform density and smooth edge. It is mainly treated by surgery, such as partial hepatectomy and segmental hepatectomy. 3. Hepatocellular carcinoma refers to malignant tumors originated from hepatocytes and intrahepatic bile duct cells, and the lesion of hepatocellular carcinoma can be manifested as low-density area in CT scan. Common treatment drugs include sorafenib, regorafenib, adriamycin and so on. Surgical treatment modalities include partial hepatectomy, segmental hepatectomy, liver transplantation and so on. If you find low density foci in the right lobe of the liver, you should seek medical treatment in time and under the guidance of the doctor, do not take medication without authorization to avoid delaying the condition. Pay attention to rest on weekdays, avoid overwork, and keep regular work and rest.