Can anyone please help with some PET scan SUV questions?

GLim

I'd like to start this post by apologizing. I'm a forum newbie. It's my first post and I'm asking for help. I have read the rules and

Recently my 29 y.o. wife and mother of my two children was diagnosed with stage 2a breast cancer. The news came so quickly and it kept coming. The tumor is 3.4 cm. After doing a follow up chest X-ray, bone scan, and MRI, they found:

a 3.4 cm dark spot on her liver

strange looking spots in her lungs

nothing special on her bones.

The doctor phoned us after the test results telling us that the liver and lungs "didn't look as if to be cancer." For the first time in a while we felt a sense of relief and happiness. This past weekend we smiled and laughed for the first time. Today we went to the doctor for our official results. He said he hadn't had a chance to check the PET scan before calling us and there was cause to be concerned.

3 of her ribs have an SUVmax of 1.4 (delayed max 1.7)

Her lungs have an SUV max of 1.2 (delayed max 1.4)

Her original breast cancer has an SUV max of 11.1 (delayed max 12.2)

In terms of general health, she does not yet feel any discomfort, pain or otherwise. She just feels tired (understandable because we are new parents, and the current medicine she takes makes it hard to sleep).

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If anyone has ANY answers, or just positive support, I'd really appreciate it.

1.) I have read 2.5 or more is typically concern for cancer, but I'm not sure if that's mets, or an initial cancer diagnosis.

2.) If it is mets, I know these values are "low" but that's it has spread everywhere, could this be terminal? How much time might we have?

3.) Why is there no SUV max for that giant liver thing?

4.) Other than cancer, what in her ribs or lungs might cause an increase in SUV?

5.) If her lymph nodes exhibit no evidence of cancer, does indicate it may not be mets?