Low density foci under the right lobe of the liver envelope can be liver cysts, liver hemangiomas, liver cancer and other diseases, usually registered with the Department of Hepatobiliary Surgery. The Department of Hepatobiliary Surgery mainly treats diseases of the liver and gallbladder, and generally adopts surgical treatment. Subperitoneal hypodense foci in the right lobe of the liver may be liver cysts, hepatic hemangiomas, liver cancer, etc. Larger cysts and blood vessels usually require surgical treatment, and liver cancer undoubtedly requires surgical treatment, so you can consult the Department of Hepatobiliary Surgery. In order to diagnose accurately, it is recommended to further enhance CT, and observe the blood supply and enhancement of the lesion with enhanced CT, so as to further clarify the diagnosis. Therefore, when the right lobe of the liver subperitoneal low density foci, should consult the hepatobiliary surgeon in time, combined with the patient’s condition, timely treatment.