Before the operation, standard tests (blood, urine, EKG, etc.) should be performed. Vaginal ultrasound is used to determine the cysts and their size, as well as cystourethroscopy for endometriotic lesions in patients with bloody urine, and colonoscopy if bloody stools are present. In addition, MRI can be used for location and preoperative planning for the diagnosis of deep endometriosis. Before the operation, you must inform your doctor about the medications you regularly use. Before the operation, your diet rich in vitamin E is valuable for the operation process.