The left adnexal cystic mass of 43×43mm is not too big, but it has basically reached the standard of ovarian mass for surgery. Generally, ovarian mass up to 50mm can be treated with surgery, if the cyst is anechoic and thin walled, it is often a physiological structure, which needs to be further examined to exclude abnormality, and it can be rechecked or treated according to the doctor’s instruction. Physiologic cysts on the ovary may be developing follicles or corpus luteum cysts, which are common physiologic phenomena and most often disappear after 2-3 menstrual periods, and can be reviewed as prescribed by the doctor. However, if such a mass is found to be heterogeneous and echogenic, and the wall of the cyst is thicker, rougher, not glossy, and there is papillary protrusion, etc., it should be considered to be of a bad nature, and some of them need to be examined with tumor markers, CT, etc., and some of them need to be operated at the earliest possible time. Most of the cystic masses in the adnexal area are benign structures, so if you have a mass in the adnexal area, you do not need to be overly nervous, but you should pay attention to it, and follow the doctor’s instructions for follow-up or further examination.