Hi Spiz, I'm also adenocarcinoma diagnosed but of unknown primary. I'm on my second type of chemo as the first one failed to have any effect on my liver tumours, though it did slow lung and lymph ones and got me fit enough to have a stronger type.  

Keep posiitive for your hubby, he will need your strength when he's down.  I know it's easy to say, but looking for the good in every day and making memories when you can is really important to keep your head healthy and not dwell on the dark thoughts.  Some things are just beyond our control and we just have to make of them what we can. It's a horrible life to be living, but we don't get a choice, just a choice as to how we face it.  

I wish you and your hubby the best outcome with treatment.  Shel x