Effect of a GnRH Analog on Hepatic Steatosis

Inclusion Criteria: * women of reproductive age * diagnosis of endometriosis. The disease is suspected by patient's individual history (chronic pelvic pain, dyspareunia or/and dysmenorrhea) and the ultrasonographic imaging (chocolate cysts). The diagnosis is confirmed histologically, after laparoscopic surgical treatment and biopsy sampling, which will be interpreted by an independent blinded pathologist. * use of contraceptives, which is the first line treatment, is contraindicated or the patient does not consent to receive contraceptives, due to personal preferences. * written informed consent to participate to the study Exclusion Criteria: * mean ethanol consumption \>10 g/day * history of other chronic liver disease (e.g., viral hepatitis, autoimmune hepatitis, primary sclerosing cholangitis, primary biliary cholangitis and overlap syndromes, drug-induced liver injury, hemochromatosis, Wilson's disease, α1-antitrypsin deficiency) * liver cirrhosis * any malignancy * chronic kidney disease * uncontrolled hypothyroidism or hyperthyroidism * severe sexual hormone disorders (congenital adrenaline hyperplasia, Down syndrome, Turner syndrome). * use of the following medications within a 12-month period before baseline, which are associated with drug-induced liver injury (DILI): interferon, tamoxifen, amiodarone, aloperidin, glucocorticoids, hormone replacement therapy, contraceptives, anabolic steroids, any medication against tuberculosis, epilepsy or viruses, methotrexate, …