So sorry to hear about your Dad. Dont give up hope there are lots of things that can be done to try to cure/slow cancer and to prelong life.
My Mum (65) started with stage 4 colon cancer in Nov 2011 and also had multiple mets (10+) in her liver (both lobes and throughout) and 2 in her lung. We were told it was inoperable and that with pallative chemo we may get 18 months.
My mum has had 4 lots of chemo and a great thing has happened. They have just been able to cut out the main tumour from her colon and they say the mets in the liver have shrunk a lot.
Yesterday they scanned her liver to see where we go from here and she will get her next appointment (with consultant) on the 25th of July to review scan.
They have told us that it is possile to take out up to 65% of ther liver and it will still grow back - so I guess we just wait and see what they suggest next.
The best advice I can give is to stay on top of the treatment, dont leave anything to chance and always follow up - dont let him get over looked or slip under the radar.
Good luck to you and your family - stay strong and feel free to message me for support....we have all been broken hearted and felt lost from this terrible cancer touching our lives - you arent alone x