Biopsy done to confirm cancer recur?

I was diagnosed with breast cancer in December with 2 lymph node involvement. I had routine scans done for entry into a trial, and the cat scan saw something suspicious on my lung. The pet scan indicated malignancy. However, my oncologist found it hard to believe my cancer could have spread so soon. I underwent lung surgery, and they found a tumor but it was benign. I had a choice between a biopsy or removal, and I went for removal because biopsies can be quite unreliable. Since I only had one spot, I think the course of action for me was more clear. Your situation sounds more complicated.

Good luck,
Monica