Is there anyone out there that is being treated for breast cancer and the Dr. is using the CA 27/29 tumor marker as a guide to active disease? I am gong thru my 4th different chemo regimen for inflamed lymph nodes in my abdomen from my breast cancer. In the past, my numbers have always gone down but now they are stalled and I have had 14 treatments of Navelbine and am getting frustrated. The Dr. wants to keep me on Navelbine a little longer since my latest CT scan is table and doesn't show any growth. Would love to hear from someone with a similar situation. Barb