Jul 17, 2004 - 5:54 pm
Looking for someone with a similar experience. Background - My dad was diagnosed with stage IV colon cancer in May 2002. He had two surgeries one in May to remove cancer from his colon and one in July to remove a spot on his liver. He had one full year of chemo (campostar). He was in remission until Feb. 2004 when they found two spots on his liver. They thought that the cancer might also be back in his colon but the surgeon found no evidence of it. His surgery was in April 2004. About 5 weeks from the date of surgery, his oncologist ordered a pet scan. Pet scan showed some spots on liver and one below liver (colon was reconnected during the surgery). Also his CEA level had increased to 4. By the way, his CEA level was about 9 before his surgery. Unfortunately, he has not been able to get back on a chemo until recently because of two eye surgeries. Last Friday, his oncologist informed him that his CEA was now a 6. My Questions: Isn't it true that recent surgery can alter PET scan results (produce false positives)? and Isn't it true that the purpose of CEA tests for some is to catch it early and operate? My dad had radiofrequency abrasion on one of his spots during his April surgery and it was successful. I think that they missed a spot during the surgery and the lack of chemo for two months has caught up with him. Any thoughts??