Allready said a prayer for your Mom, Jean!
Good to hear they are further investigating with a cat scan.
It may be nothing, could be pneumonia, scaring, fibrotic tissue.
It may be something that could be treated with antibiotics
or some surgery.
((((Hugs))))
You keep us posted, my dear!
We're all pulling for your Mom!
God Bless and Heal Jean's Mom and Alyssa's Grandma!