If a woman has irregular menstruation, delayed menstruation or irregular vaginal bleeding, it is considered to be related to pregnancy, and blood must be drawn for HCG. if HCG is increased and a mass appears in the adnexa, the possibility of ectopic pregnancy should be highly suspected. 2. pelvic inflammatory disease: if a woman has regular menstruation and normal HCG, if there is pain and pressure in the adnexal area, it is very likely that the mass is inflammatory. If a woman has a normal HCG and no abdominal pain or any other discomfort, but a mass is found in the gynecological examination or ultrasound, it may be a subplasmic fibroid, mostly a solid mass. If it is a cyst, consider it to be a tubo-ovarian cyst, also known as hydrocele. There may also be physiological or pathological ovarian cysts. Physiological cysts of the ovary are mostly seen as ovarian corpus luteum cysts, which usually subside on their own in 2-3 months. If the ovarian tumor is cystic, it should be actively observed. When the ovarian cyst reaches 7-8cm in size, it must be surgically treated and the ovarian mass must also be prevented from the possibility of malignant transformation.