If the FDG PET scan detected area is smaller than the PSMA PET scan detected cancer area than the FDG PET scan is not fit for the purpose to detect the whole PSMA negative cancer. Therefore you don't really know if there was a concordance or not. (I am not knowlygable enough but that is what I think). Maybe you should get a chemo if your PSA continue rising. That is why you should have a PET scans in two weeks. Get a liquid biopsy also. Hope your PSA only jumped why your cancer is dying?
Mark Thank you for your important update. Did you have a FDG before your first infusion.Sorry LU does not seem to be working I will be sceptical about having Lu for future treatment
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