The majority of ovarian cysts are physiological. If an ovarian cyst is detected for the first time during an ultrasound, it can be observed temporarily. Generally, such cysts will gradually shrink or disappear naturally after two to three months. If the cyst is relatively large, exceeding 5cm, and the ovary has not shrunk after two to three months of observation, but instead the cyst has grown, it is likely an ovarian tumor, which requires surgical treatment. If an ovarian tumor occurs, there is a potential for malignancy or torsion, so timely surgical intervention is necessary.