Carbohydrate antigen 242 antibody (CA)

Detection of digestive tract tumors. Carbohydrate antigen CA242 is a tumor marker of digestive system, especially pancreatic cancer and colorectal cancer. This index was significantly increased in patients with pancreatic cancer and colorectal cancer. The detection rate of malignant tumor can reach 60% - 85%, and the content is high. According to some data, CA242 is superior to CA19-9 in the diagnosis of pancreatic cancer, with a sensitivity of 66% - 100% and a sensitivity of 60% - 72% for colorectal cancer. The sensitivity of CA242 from high to low was liver cancer, gastric cancer, colorectal cancer, pancreatic cancer. The sensitivity of CA242 in esophageal cancer was only 9.09%, indicating that this marker test is not suitable for the detection of squamous cell carcinoma. Detection rate of adenocarcinoma in addition, CA242 plays a role in judging the prognosis of the disease. When measured simultaneously with carcinoembryonic antigen, a high level of CA242 before surgery is a strong prognostic indicator.