I noticed in your post you mentioned you hope the circulating DNA is residual not new occurrence. I was wondering what that means? I have been so scared since my natera came back 1.5 from 0. My surgery was Dec 2021 so right at 3 year mark I got positive test. I had a lung scan which radiologist said nodule doc has been following is stable, I was releaved, till my lung doctor called me yesterday said he viewed my scans & wants me to come in right away instead of my schedule appointment February 27th. So now I’m really scared the radiologist missed something my doctor sees. Why would he not tell me on phone & want me in right away if nothing wrong? Being in breast is easier to take out lungs are totally different. I pray I don’t have anything in my lungs. My diagnosis in October 2021 was invasive mammary carcinoma with lobular features. I had 2 tumors & 7 lymph nodes removed