hi.It is not possible to diagnose endometriotic cyst by endovaginal scan only. It is a hitological diagnosis. Your cysts of this size seem to be simple cyst
only , also called functional cysts.However, the ovarian vol. does not match with the size of the cyst. Consult with your dr. and you can be kept on follow up and review.
However, confirmatory diagnosis of endometriotic cyst is by Laparoscopy