Recurrent Breast Cancer: Markers Increasing
I have been on a Ribociclib/ Letrozole treatment for three months now. My CA 15-3 marker was 142, 156 and now 190 u/ml (Oct/Nov/Dec).
I was feeling great in the first two months but I have developed some pain around the waste in an area I never had before.
Shouldn't markers start dropping after three months? Or is a pet scan the definitive detector?
Just a heads up: Initially I was diagnosed with RBC because of suspicions my Oncologist had with of these pains and not the pet scans (which were done 9 months earlier and I was clean) nor the markers (Which I had done a month earlier).