Can an untreated cyst on liver cause damage?

Not usually: Simple liver cysts are the most common type of liver mass and is relatively common. In general, these cysts cause little or no symptoms and are usually left alone. If there are symptoms, or changes in their characteristic on imaging, then a specialist surgeon dealing with the liver, can often remove the cyst. If the cysts are part of a polycystic liver disease, you may need special consideration