Inclusion Criteria:  ASA I-III patients aged 18-75 y , scheduled for elective laparoscopic unilateral nephrectomy(partial / radical)  Exclusion Criteria:  Age <18y, >75y, ASA IV-V patients Obesity (BMI> 30 kg / m2) Pregnancy Contraindication of regional anesthesia (coagulopathy, abnormal INR, thrombocytopenia, infection at the injection site) Serious cardiac, hepatic and cerebrovascular disease Hypersensitivity to local anesthetics or a history of allergy Patients with a history of opioid use longer than four weeks Patients with psychiatric disorders or communication difficulties Patients who do not want to participate