Hi Jessica,
I thought that you might be interested in this site:
http://cancergrace.org/.
It's main focus is lung cancer. It includes, among other things, a forum that includes input from both patients and thoracic oncologists, and includes information about the latest treatments and clinical trials.
Hope your hubby is holding up okay. If he's still having appetite problems, nutritious smoothies might be helpful. Easy to digest with needed nutrients.
You and he are in my thoughts and prayers.