1. Inclusion criteria  ASA I-III. Age ≥ 20 & ≤ 70 Body mass index (BMI): Less than forty and more than twenty. Patients undergoing major gynacological cancer surgeries.  2. Exclusion criteria  Patient refusal. History of sensitivity to local anesthetic (amide group). History of psychological disorders. Coagulopathies: hereditary (e.g. hemophilia, fibrinogen abnormalities& deficiency of factor II) - acquired (e.g. liver disease, vitamin K deficiency & therapeutic anticoagulants drugs). Localized infection. Morbid obese BMI>40. Incooperative patients. Patients on chronic pain therapy.