What Are the Primary Causes of Lesions on the Liver?

Non-cancerous blood-filled masses known as hemangiomas are the primary cause of lesions on the liver, according to the California Pacific Medical Center. Other benign causes of hepatic lesions include simple liver cysts, focal nodular hyperplasia, and hepatic adenomas, explains Johns Hopkins Medicine. Liver cancers such as hepatocellular carcinoma can cause malignant lesions on the liver, states the Cleveland Clinic. Liver lesions also appear when cancer from a nearby organ such as the colon metastasizes to the liver, notes WebMD.