Does chemo itself ever raise CEA?

I found this:
Hi k1,
I hope this helps.

What conditions can cause an elevated CEA?

Both benign and malignant (harmless and cancerous) conditions can increase the CEA level. The most frequent cancer which causes an increased CEA is cancer of the colon and rectum. Others include cancers of the pancreas, stomach, breast, lung, and certain types of thyroid and ovarian cancer. Benign conditions which can elevate CEA include smoking, infections, inflammatory bowel disease, pancreatitis, cirrhosis of the liver, and some benign tumors in the same organs in which an elevated CEA indicates cancer. Chemotherapy and radiation therapy can cause a temporary rise in CEA due to the death of tumor cells and release of CEA into the blood stream. Benign disease does not usually cause an increase above 10 ng/ml.

http://www.medicinenet.com/carcinoembryonic_antigen/article.htm

Karen