Overview Aalgesic Efficacy of Erector -Spinae Technique With Levobupvicaine in Patients Undergoing Upper Abdominal Cancer Surgery Status: Recruiting Trial end date: 2021-04-01 Target enrollment: Participant gender: Summary To study analgesic efficacy &safety of bilateral erector spinae block for upper abdominal cancer surgery as apart of multimodal analgesia. Phase: Phase 1 Details Lead Sponsor: South Egypt Cancer InstituteTreatments: Levobupivacaine