Costotransverse Foramen Block Versus Thoracic Paravertebral Block in Thoracotomy for Lung Cancer

This study is comparing two types of nerve block techniques for pain relief after open chest surgery (thoracotomy) for lung cancer: a costotransverse foramen block (a newer technique) versus a thoracic paravertebral block (the current standard). The goal is to find out which provides better pain control. **You may be eligible if...** - You are between 18 and 65 years old - You have a BMI between 18 and 35 - You are scheduled for open chest surgery for lung cancer - You are classified as ASA physical status II or III (moderate health issues) **You may NOT be eligible if...** - You have an allergy to local anesthetic medications - You have a history of psychological disorders - You have conditions that prevent regional anesthesia (local infection, nerve disease, bleeding problems) - You have severe respiratory, heart, liver, or kidney disease - You are extremely obese (morbidly obese) - You are on chronic pain medication Talk to your doctor to see if this trial is right for you.