Suggest Life Expectancy Of A Patient With Bowel Cancer

my husband has recently been diagnosed with bowel cancer, following an mri scan we were told that it has pread to both parts of the liver. We have been told that it is inoperable and he is due to start chemotherapy next week, 8 and a half weeks from initailly being told that he had a cancerous growth in his bowel. We have been given no prognosis, we were told that is not possible until his next ct scan after 3 months (4 cycles) of chemotherapy. Iamhaving a really hard time dealing with all the uncertainty and no matter how dire your answer I feel that I, at least, need a guideline as to what my husband s life expectancy may be? He is 53 years old around 20 stone in weight and is 6 foot 2 inches tall. No previous history of cancer