CA125 is a tumor marker, belongs to the tumor marker in the glycan antigen, its specificity (that is, specifically refers to which aspect of the tumor it will be elevated) is not strong, that is, its elevation does not mean that it is definitely a certain aspect of the tumor. In gynecology, such as gynecological inflammation, uterine fibroids, ovarian cysts, these conditions may cause CA125 elevation. If it’s a benign tumor, most of the levels it elevates won’t be very high, but if it’s a malignant tumor, it may be significantly elevated.