Kim - I'm so sorry to hear about how rough it's been for your Dad. I know how worried you must be. Seems like a lot of people do get this type of oral cancer related pneumonia. I'm sure you will hear from others with more knowledge or more recent experience than what I can give you. My son had problems with aspiration pneumonia and when it was over they was a spot on his lung but it was just scar tissue from the pneumonia. That was 7+ years ago and he doing fine, now. I hope your Dad gets some good news soon.