At age 52 the amount of estrogen an ovary produces is typically small. But the ovaries do also continue to make androgens which can help with libido and some of the androgens are converted into estrogen. If your cysts are small and coming and going, it is likely that these cysts are "functional" cysts meaning they are less typical cysts from a normal ovary rather than tumors (either benign or malignant) that must come out. However, If you are being troubled by constant observation with ultrasounds and symptoms, and the worry creates stress for you, it is a reasonable consideration to discuss removing the remaining ovary with your doctor. It could likely be done by laparoscopy and your recovery would be much shorter than if done by a bigger operation. You would have to see how many symptoms you have and decide if you in fact want to or do not want to take estrogen at that time. Hopefully, your estrogen level being low, you might not experience many symptoms and not need treatment for hot flashes. You still might want to have a bone density done and a colonoscopy to evaluate risk for osteoporosis and colon cancer. Getting a second opinion would make sense if your current doctor does not want to discuss these options with you.
Machelle M. Seibel, MD