There is no way we can determine if your cysts are cancerous or not, although most ovarian cysts are benign. Have you had a blood test called a CA-125 done?
What has your doctor advised you to do and has he run any blood tests yet? A 5cm cyst is not that large but most doctors will remove a cyst that is 5 cms. or larger if they aren't a functional cyts that could resolve within a few menstrual cycles. A calcified cyst will not resolve itself as it has hardened. A cyst that size can be removed with laparoscopic surgery that has a much faster recovery time than open surgery.
I just wanted to point out that there is a forum just for Polycystic Ovaries. (PCOS).. you may like to post there as well.
Unfortunately, there is no way for sure to determine if a cyst is malignant or not without actual surgery being done. Even the CA-125 won't tell you for sure, as there are many variables with that test. It isn't very reliable in premenopausal women ..
Just remember that cysts are 95% benign. When do you see your Dr. again?
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