Glycoantigen 19-9 elevated tenfold need to promptly go to the hospital for further examination to identify the cause of the disease. Glycans antigen 19-9 elevated tenfold is mainly seen in digestive tract malignant tumors. 1. Glycoantigen 19-9, CA199, is mainly seen in malignant tumors of the digestive tract, such as pancreatic cancer, colorectal cancer, gastric cancer, gallbladder cancer, bile duct cancer, liver cancer, especially for pancreatic cancer is a more sensitive tumor marker. 10-fold elevation of CA199 needs to pay attention to the possibility of pancreatic cancer. 2. 2. 10-fold elevation of CA199 can also be seen in ovarian cancer, breast cancer, etc., which can be clarified by combining with other tumor markers and relevant auxiliary examinations such as CT and MRI. Once CA199 is found to be obviously elevated, please pay attention to it and go to the hospital for further improvement of relevant examinations under the guidance of doctors to make a clear diagnosis, so as to avoid delaying the condition.