Maybe more ca cells.: Some cancer cells secrete a hormone or antigen that can be measured in the blood, and give a hint of a tumor's presence or a recurrence of growth of new cancer cells. Examples are psa in prostate ca, CEA in colon ca. How specific the markers are, the quantity increase, the sensitivity all are factors determining the significance clinically. The trained oncologist will discuss meaning & rx options.
Answered 12/25/2022
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