Simple benign cysts of the liver occur in 5% of the general population, however only 5% of these patients become symptomatic. Most patients have a single cysts, some patients may have several simple cysts. It can be due to congenital lymphatic obstruction and faulty bile duct. The right lobe of the liver is the site of these lesions most frequently.

Although most cysts are asymptomatic, when symptom occur, the do so because of the very large size of the cysts, or hemorrhage into it.

Treatment is required only if the cyst is symptomatic or if the diagnosis is uncertain. Surgical procedure involve removing as much of the cyst wall as possible. Laparoscopically this can be with excellent results.