Risk of cancer increases as we get older, you didnt mention your age or family history, they could affect the treatment. More than 95% of all
ovarian cysts are benign, unilocular cysts are more than 99% benign according to some sites.
If you are younger than 40 your risk of cancer is very small. Once you are over 40 or especially if you are post menopause, your risk of cancer increases although benign cysts would still be most common.