Don’t be alarmed if CA153 is high. CA153 is a tumor marker, which can be detected by collecting blood, the normal value of CA153 is ≤25U/mL, if the simple CA153 is high, don’t worry too much, it is not necessarily caused by the disease, it may also be due to the specimen is contaminated by microorganisms, the test so that the operation is not appropriate and other factors can lead to the CA153 is high, if after reviewing the increase is still high, then you should consider the disease caused by the situation. Benign diseases with high CA153 alone include breast hyperplasia, hepatitis, pneumonia, pancreatitis and so on; malignant diseases include breast cancer, lung cancer, pancreatic cancer, liver cancer and so on. Relevant examinations are needed to clarify, such as CT, ultrasound, tissue biopsy, other tumor markers and other examinations. It is necessary to go to the hospital for further examination to find out the cause of the disease when pure CA153 is found to be high.