When a dog has an identifiable liver or gall bladder mass, the treatment of choice usually is surgical removal. Internal hemmorhage is the most common complication of these surgeries, and fresh blood products should be available in case transfusion is necessary before, during or after surgery. Dogs with liver disease are anesthetic risks, because most anesthetic agents are processed by the liver. Chemotherapy and radiation therapy can be used for some forms of liver cancer. Unfortunately, treatment options are very limited for those cancers affecting more than one lobe of the liver, and for those that are metastatic.