My mother had cancer twice, once colonrectal (stage 3) in 2002 and once breast in 2008. Both got surgically removed followed by chemo (and radio for breast). She just got a call from her oncologist for a borderline CEA level (around 5.5). As far as we can remember, the pre-surgical CEA levels were both lower than 5 (could be ~2.5, I don't know the exact value). She also noticed that her CEA has slowly crept up in the last 3 tests (1.5, 2.5, 2.8).
Could this rise be an indication of recurrence or metastasis? Or could it be of a different origin? She's going to the doctor this Wed but I just want to get some extra advice on the issue before hand. She is extremely worried.