Hi - thank you for all the information. It appears the treatment and follow up is as expected, however I suggest it would have been much better if the surgeon would have taken more than 20 lymph nodes to get a broader assessment of The degree of metastasis. That being said it appears that a tumor sample was not taken at time of surgery and that prevents you from being able to assess with a circulating tumor DNA test. However I would ask your doctor if he could check on that and there's a potential you could continue your screening with either the Signatera test, or a new and possibly better test being offered by the company Exact Sciences, Madison Wisconsin. The most interesting thing however is the last point you made related to calprotectin, because as you know this essay looks for inflammation in the gut due to either a bacterial infection or other inflammatory bowel syndrome.... And it just so happens that any inflammation can cause an increase in CEA. Ask your doctor about this as well. So given the relatively low CEA level and the potential for inflammatory bowel disease I will be less concerned about cancer. I hope that's the case for you!