I had brought up this subject mos ago and never rec'd any responses. I don't know about the cyberknife. Do you know for sure the nodules ARE malignant? If so, how did you find out? I also have 2-a small 4mm one in right lung and a larger, 6X9mm one in my upper left. Also a hilar lymph node shows on PET with focal hypermetabolic activity. But noone is saying it IS metastatatic from my SCC. They are waiting and watching-if it grows, it apparently is, but if it stays stable over 2 years, proboably not. What are the actual statistics of stage IV metastizing to lungs? Have never found any. I'd love some more info on this! Thanks so much, Gayle