Topic: IMRT and CA 19-9 question
So Mark started his 25 doses of IMRT with 5FU continuous and Interferfon injections. He did a one time dose of mitomycin (looks like grape Kool-aid...very strange). His CA 19-9 was within normal range of 17 at the end of chemo (Gem/Ox) at his appt on Jan 31st. It was up a little a week ago when we started the IMRT and chemo but now it's up to 170. I asked our ONC about it but his answer is that they don't really worry about it as many things can affect it and the cc is not always easily monitored with the CA 19-9. So my question is: could the IMRT cause the CA 19-9 to go up or one of the drugs they are using? Has anyone had this experience with the two of them. And I wonder why then they check it every week if they don't worry about it too much.