Question about lump under arm

[Peggy]

Hi everyone. I have developed a lump under my arm probably on a rib. At first my onc said it was just my rib...then he realized it had some movement. It's about 2 cm and painless. However, I found the lump because I had some pain going from under my arm across the chest where I had the mastectomy. I had radiation in this area also.

Anyone had a lump develop under the arm on the rib? My blood work was also a little different. Slightly raised liver enzymes, slight anemia. My onc is just watching it for now.

Sound familiar to anyone? I am so ready for everything to be "normal" for a while...

Thanks for any suggestions or information.

Peggy