In Jan. 10 I developed pain in my left arm. an xray showed an "unusual sclerotic lesion" in the upper bone but the drs. said it didn't look like cancer so they've been watching it. I had 3 bone scans that showed no cancer. The most receint was in dec 10. In Jan. I started getting those little lumps that were red and sore in my left armpit. They went away so no problem. Now there is a larger mass/lump under the skin of the same armpit but it's different than the skin type infections. It's been there for 2 wks. Do those little skin infections sometimes turn into a deeper mass? It doesn't hurt and isn't red. Cancer was on the right, lump is on the left. I don't want to be jumping to the conclusion that everything is a sign of the cancer coming back. I really appreciate any thoughts you can share. The answers on this website are always so helpful. Thank you.