I just wanted to say good luck to you mum! I had a lump about that size and it was an infected sweat gland. It felt firm to the touch. They aspirated it and I started antibiotics. I'm glad though, with your mom's history, that you are taking her and hope it turns out to be something like I had. hugs
Hi sorry took about to answer as the holidays were here. My mom went and got a biopsy done last week we are now waiting for the results.