Between 2009 and 2012, Wei Boli, deputy director of the Department of Surgery at Taipei Medical University Hospital, conducted a study on more than 350 colorectal cancer patients and found that more than 30% of them had smoking habits. In particular, the cancer tumor index CEA, which is currently most commonly used for colorectal cancer postoperative tracking, is easily affected by smoking or inflammatory reactions in the body that are not related to cancer, so it often needs to be combined with other tests to confirm the diagnosis, such as this man, who used DR-70, a tumor marker that is not affected by smoking, with CT tomography for double detection.
