A hypoechoic mass in the adnexal area and CA125: 45U/ml, at this time, we should be alert to the occurrence of ovarian chocolate cysts, pelvic inflammatory disease and other diseases. CA125 is a tumor marker, and its elevation is associated with malignant lesions such as tubal adenocarcinoma, endometrial cancer, cervical cancer, intestinal cancer, breast cancer, and benign lesions such as endometriosis, pelvic inflammatory disease, and ovarian cysts. Its value of 45U/ml is slightly higher than the normal value, so it is considered that the probability of malignant lesions is relatively low, so at this time, we should be alert to the occurrence of ovarian chocolate cysts and pelvic inflammatory disease. If the patient is combined with progressively worsening dysmenorrhea, lower abdominal cramping and other discomforts, it is necessary to be alert to the occurrence of ovarian chocolate cysts; if the woman is combined with fever, increased vaginal discharge, abdominal pain and other discomforts, it is necessary to be alert to the formation of pelvic inflammatory masses. For patients who are found to have hypoechoic masses in the adnexal region and CA125: 45U/ml, it is recommended that they go to the gynecology department of a regular hospital, complete the ultrasound and other relevant examinations, and then take active treatment under the guidance of the doctor after clarifying the cause of the disease.