What is the best treatment for an ovarian simple cyst?

Watchful waiting. Wat in many cases you can wait and be re-examined to see if the cyst goes away on its own within a few months. This is typically an option regardless of your age if you have no symptoms and an ultrasound shows you have a small, fluid-filled cyst. Your doctor will likely recommend that you get follow-up pelvic ultrasounds at periodic intervals to see if your cyst has changed in size.