Ovarian cysts can be cancerous (malignant tumors), but most are probably benign lesions. Ovarian cysts are classified as benign ovarian cysts, malignant ovarian cysts and junctional ovarian cysts. 1. Benign ovarian cysts Benign ovarian cysts tend to occur in women of childbearing age, mostly unilateral, without oozing, without abdominal pain and other discomforts, with a long course of disease and slow growth of the tumor. As long as the cysts are pathologic, except for physiologic ones, they should be surgically treated to make a clear diagnosis, except for malignant ones. If the cyst is enlarged, ruptured or twisted, surgical treatment is needed. Surgery should also be considered if the cyst is determined to be pathologic. 2. Malignant ovarian cysts (cancer) Ovarian cancer mostly occurs in postmenopausal women, with rapid growth, malignant biological behavior, invasive tumor growth, rapid development of the disease, early infiltration of the surrounding neighboring organs and tissues, and distant metastasis may also occur. Clinical manifestations of malignant ovarian cysts include the following symptoms: discomfort in the lower abdomen, thickening of the abdominal circumference, abdominal pain, menstrual disorders, irregular vaginal bleeding, and pressure symptoms. Treatment options: surgical resection is the main treatment means, once diagnosed, early surgical resection. 3. Junctional ovarian cysts Junctional ovarian cysts have a better prognosis, and for young patients who have not yet given birth, they can undergo fertility preservation surgery, which can be performed by minimally invasive laparoscopic combined surgery.