Aalgesic Efficacy of Erector -Spinae Technique With Levobupvicaine in Patients Undergoing Upper Abdominal Cancer Surgery

Inclusion Criteria: * Patient subjected to major upper abdominal cancer surgery. * The enrolled age will be from 18-70 years old. * ASA: I-III, NYHA: I-III. Exclusion Criteria: * ASA \& physical status (NYHA) \> III. * Pregnant women. * Body mass index \>40 kg/m2. * Pre-operative opioid consumption. * Contraindication or patient's refusal of the procedure. * Un co-operative patient. * Coagulopathy, skin infection, significant organ dysfunction or drug allergy.