Most ovarian cysts are physiological, meaning they will naturally disappear or shrink within two to three months. Generally, treatment is not necessary, and there are no effective medications for treating ovarian cysts. If an ovarian cyst does not disappear after three months, or if it continues to grow, then it is considered an ovarian tumor. Such ovarian tumors require surgery for treatment. Therefore, if an examination reveals that an ovarian cyst has not disappeared after three months, surgery is necessary. This is because if an ovarian cyst persists for a long time, it may cause torsion or even become malignant.