CA211 is a tumor marker. Tumor markers refer to proteins, oncogenes, and tumor suppressor genes that are usually in the form of antigens, enzymes, receptors, hormones, or metabolites that increase with the appearance of tumors Components such as related products are produced and secreted by tumor cells.

　　1, most patients with pancreatic cancer;

　　2, hepatobiliary cancer, gastric cancer, colorectal cancer;

　　3, low Increased concentration and transient increase can be seen in chronic pancreatitis, cholelithiasis, cirrhosis, renal insufficiency, diabetes, etc.;

　　4. When the tumor recurs, CA19-9 can be raised again for monitoring swollen.

　　CA211 positive standard ≥3.3ng/ml, is currently the preferred tumor marker for squamous cell carcinoma, with sensitivity up to 60％ specificity up to 95％ The early diagnosis of cell lung cancer, monitoring of efficacy and prognosis are of great significance.

　　Tumor markers refer to the components that increase in the form of antigens, enzymes, receptors, hormones or metabolites, oncogenes, tumor suppressor genes and related products, etc., accompanying the appearance of tumors. , Is produced and secreted by tumor cells. CA211 mainly reflects tumor markers of lung cancer, especially squamous cell carcinoma. Of course, its specificity is not very high, and some other diseases of the lungs may also cause the increase of CA211.