My husband has stage 4 colon cancer. He has had mets to his liver and to his lungs. Another option you might want to inquire about is Cyber Knife. It is NOT surgery!!! (even though it has the name knife in it). It is a VERY pinpointed radiation that can be used on the liver and the lungs (actually most organs). My husband had too many tumors in the liver to use cyber knife so he had his liver resected. (they took out half of his liver and then 6 weeks later took out almost all of the other half, because you liver grows back. He has had cyber knife on his lungs and it works GREAT!!!! Just sharing another option.