For PCOS They could be performing ablation or what's known as ovarian drilling (which sounds way worse than it is) they are essentially "draining" the cysts with a needle so the contents is removed from your system and they cauterize the area after - cyst ablation "cooks" the cyst from the inside out and you will have grey discharge a few days post operation - whilst expected you should be tested for infection to be safe. Additionally, sometimes they can laser off endometriosis for more high damage risk tissues which is essentially burning off the Endo tissue but is still considered excising. I've had ovarian drilling, ovarian ablation, Endo excision and Endo laser excision and I know there are other methods of removals. If you are concerned about it speak with your doctor and make them aware of your concerns if you still have concerns after that or feel your concerns haven't been heard or understood seek a second opinion from a different doctor before deciding if you are to proceed with the procedure.