How long can my father live with 1-2mm cancer cells around his liver?

it was found by regular body check in march 2008. he since then underwent 5 times of chemotherapy. doctor is going to try another drug next month to see if the drug has a response on these cancer cells. he can eat well, sleep well... the cells grow little bigger 3%. i worry about him so much. he says he only have 2 years to live. is it true?