If the glycogen antigen ca199 is high, it is usually not a big problem if it is just a little bit, because if it is a liver disease, it may also cause this indicator to be elevated, such as fatty liver, pancreatitis, cholecystitis, cirrhosis of the liver, etc. It may cause the glycogen antigen ca199 to be high. However, this indicator needs to be reviewed because it is related to many tumors, such as pancreatic cancer, gallbladder cancer, bile duct cancer and other malignant tumors, which can significantly increase ca199.