Hello. My dad also has a secondary liver tumor. It depends on where the tumors are located. He will not feel the tumors except when they start to grow and create pressure or cause symptoms. Pain under the rib cage on the right side, and back. If they block a bile duct, he may experience jaundice-- yellowed skin and eyes. Legs could swell. Belly might get big from fluid. Diaphragm could push up into the lung area. It depends on what's going on in there. So far, I think most of the symptoms experienced by my dad have been from complications from the liver biopsy. The only thing he has, as far as the liver goes right now, is pain.
The doctor will be able to monitor liver function with the blood labs. Chemotherapy could shrink those tumors down. What drugs did they mention, if they did?