When doing the scope they would be able to tell if surgery to remove the tissue was required, if so they could go immediately in to doing so. I say required because your case may not be severe enough to need surgery. If surgery is completes this need to be done every 2 to 3 years. It is not cheap and it has serious side effects. If you choose not to have surgery endometriosis can be treated with birch control too.
Birth control taken daily can prevent the endometriosis from growing.
Also when you are pregnant you have also stopped it from growing. There are a few very serious risks that come with having endometriosis. Endometriosis is a common yet poorly understood disease. It can strike woman of any age, race or social standing. Nothing about endometriosis is simple, and there are no official cures.