Rhomboid Intercostal Block vs Erector Spinae Block

Inclusion Criteria: * patients undergoing thoracotomy for lung cancer Age ≥ 18 years and ≤ 65 years ASA physical status II or III Body Mass Index (BMI) \> 20 kg/m² and \< 35 kg/m² Willing and able to provide informed consent Exclusion Criteria: Patient refusal ASA physical status IV Age \< 18 years or \> 65 years BMI \< 20 kg/m² or \> 35 kg/m² Known allergy or contraindication to local anesthetics or opioids used in the study History of chronic pain or psychological disorders Contraindications to regional anesthesia (e.g., local infection, coagulopathy, pre-existing peripheral neuropathy) Severe respiratory, cardiac, hepatic, or renal disease \-