We got the results

The place on Mom's throat is an inflamed mucuous membrane. Dr. An said that it might not ever be the same, but it is nothing to be concerned about and is a normal result of radiation. He went down her nose to her throat with a scope and looked and said that nothing looked different from the last time he looked at her throat, a few months ago.
The PET Scan indicated that the place on my mom's lung is cancerous. So . . .
we are waiting for a referral to a cardiothoreasic surgeon (a lung and chest surgeon). The surgeon will look at the CT Scan and the PET scan and determine the best type of biopsy to do. (Needle, through her throat, or all out surgical) The biopsy will be used to determine the exact type of cancer, the stage, and the treatment plan. Dr. An said that Mom can't have any more radiation (she had 40 full treatments before and that is the lifetime max). He also said chemotherapy won't do much good. So, Dr. An said that the surgeon may opt to do surgery and remove the tumor, but that will ultimately depend on a few factors--Mom's overall health, the tumor itself, and whether it will actually benefit her overall. So what I gathered from this (and from all the research I have done) is that if she cannot withstand the surgery, or if surgery is not an option, then there is not much the doctors can do for her.
Not the news I wanted, but then again not surprising.
She is upset, and I understand, but at the same time, I want to ask her if smoking was worth it.
Then again, we have had all this extra time with her we didn't expect to have, so I feel blessed.
Emily just loves her so much. I don't know how she will handle her Mimi being sick or gone. As an adult, I can at least understand it, but my baby, I don't know.
I did tell my sister that I really wished that we could all spend Christmas together, as I felt certain this would be my mom's last one. She said she would talk to her husband. So we will see what they do and what happens.

It would mean a lot to me and I know it would mean everything to my mom. We have not spent Christmas together since I was in college in 1999. My sister and her husband have not been here for Christmas since 1987!

Thank you ladies! I hope so too.

Roxanna
You know, I used to think that the way my dad died was terrible, and I will always wish that we could have said goodbye to him, if we had just had ten minutes, but I can tell you that watching a loved one suffer like this, with cancer or some other illness, is tougher than having someone die the way my dad did. The one comfort I have is the fact that my dad didn't linger and suffer. It happened fast, in a matter of minutes, which sucks for us left behind, but ultimately he didn't suffer.
So, that said, I can't imagine going through what YOU did as a teenager. I don't think I would have had the strength or maturity at that age to deal with it. So, and to you for being strong enough to make it through all that.
I am trying not to get my hopes up for Angie to come home for Christmas. It would mean EVERYTHING to me if they did that, so I can only imagine how much it would mean to my mom. But I don't want to even think about it to much because I don't want to be let down, disappointed, or hurt by her not coming, you know?
Thanks, everyone, for your support and concern.

Lenora, it's good advice and I'll take it and use it. Thank you!
I already see her doing some of this. I know she is worried and upset and depressed (more than usual), but my MIL and I are trying to get her out and get her to spend time with us and Emily. I just commented to Kyle yesterday that NOW is not the time for her to become a homebody, that now, more than ever, she needs to be with everyone. So, I couldn't agree with you more.

It would be hard for us to do that, but I have considered it. She lives in Los Angeles. If my mom has had surgery or is in some form of treatment, then we couldn't go anyway. And usually flying isn't recommended for cancer patients b/c of the recirculated air on the planes--GERM CITY! So, I don't know. I would hate to deny Kyle's parents their Christmas with Emily, she is their whole WORLD. Honestly, if my mom wants to go, I will do whatever I can to make it happen, but I think it's my sister's place to come home for a lot of reasons. We have not all been together here, at "home" as a family in 18 years! I think my mom is a lot more comfortable here than there. They have no family there, and my MIL considers Andrew (my nehphew) as one of her grandchildren, he even calls her Nana like Emily does. To me, it makes sense for them to come here, but it may not happen. So, I am open to going there if it comes down to it. Just keep us in your prayers and we'll see what happens.

Mary, I am so sorry. Oral cancer is so much more common than I ever thought.
I had a student whose mom died from oral cancer. She was about the age I am now (35 or 36) and had never smoked or drank alcohol. I kept wondering how oral cancer could be so serious. Back then, I had the image of oral cancer as a sore on the lip or gum. Boy was I naive, and who would have thought I would be so educated about it now!
I was talking to DH about it all yesterday and he said that I sounded like a doctor because I talk about squamous cells and carcinoma and staging and I know all about the treatments. It's knowledge I would gladly give up if it would change the way things are with my mom.