"In most cases, there is a single cyst, though several cysts may be present. The cysts can range in size from 0.3 cm to 2.5 cm in the long axis. Attenuation varies from 12-80 HU. Posterior parahepatic cysts do not enhance, are not FDG-avid, and appear cystic on MRI. They should not grow on follow-up imaging."
"metastasis (e.g. melanoma, sarcoma)"