hi Lynne,
The chance of cancer is low. But if you have a cyst that is not going away and is giving you symptoms, you should ask your doctor about having that ovary removed. I am not sure that menopause will alter this cyst if it has not gone away in 6 months
best wishes
It is common for doctors to follow up on cysts after a couple of months to see if there is any change. Although you have no uterus, you still may be pre-menopausal at 50 and still ovulating. The cysts are not very big, lots of doctors will not do anything on a cyst smaller then 5-6 cms. I don't think that 6 months is an unreasonable amount of time to wait, but, if you want it sooner, why not push for another sono in 3 months???
Good luck and let us know how everything goes!!!