Hey - I too was thinking about you just yesterday and wondering how you were doing. I'm sorry you're going through this. Do talk to the dr, I'm not sure if rads would help or hinder at this point - as you would then add a different type of pain, and symptoms to the mix. And no your ENT likely doesn't know much about lung cancer. But hopefully they can do something for him in regards to pain, and the hole you describe.
Hugs and strength to you - and no he should not be alone while you are working maybe the hospice can send in help?

Cheryl : Irritation - 2004 BX: 6/2008 : Inflam. BX: 12/10, DX: 12/10 : SCC - LS tongue well dif. T2N1M0. 2/11 hemigloss + recon. : PND - 40 nodes - 39 clear. 3/11 - 5/11 IMRT 33 + cis x2, PEG 3/28/11 - 5/19/11 3 head, 2 chest scans - clear(fingers crossed) HPV-, No smoke, drink, or drugs, Vegan