The most common type of low density lesion in the right lobe of the liver is the hepatic cyst, which is a benign disease that occurs due to congenital bile duct dilatation, or in some patients secondary to localized injury to the liver parenchyma that remains after healing. In addition, infections can also form limited cysts. If the patient has no clinical symptoms, no special treatment is needed and the patient can be followed up and observed regularly. If the cyst gradually increases in size and compresses the adjacent bile ducts, secondary obstruction, infection, or even jaundice may occur, in which case surgery is the treatment of choice to remove the lesion. Giant cysts are also prone to secondary infection, manifesting as abscesses, and patients may also develop chills and high fever, requiring surgical incision and drainage, and active intravenous anti-infection treatment after surgery.