The major complications that can arise from thoracic surgery include:

1. Infection: Surgical site infections, pneumonia, or other infections can occur after thoracic surgery.

2. Bleeding: Excessive bleeding during or after surgery can be a complication and may require additional intervention.

3. Air leaks: Air leaks occur when air escapes from the lungs or airways into the chest cavity, resulting in a collapsed lung or other respiratory complications.

4. Respiratory complications: These may include pneumonia, atelectasis (collapsed lung), or respiratory failure.

5. Complications related to anesthesia: Adverse reactions to anesthesia can occur, including allergic reactions or complications from being under anesthesia for a prolonged period.

6. Blood clots: Deep vein thrombosis (DVT) or pulmonary embolism (PE) can occur after surgery, especially if the patient is immobile for an extended period.

7. Nerve or vessel damage: In rare cases, nearby nerves or blood vessels may be inadvertently damaged during surgery, leading to complications.

8. Cardiac complications: Patients with pre-existing heart conditions may be at risk for cardiac complications during or after surgery.

9. Organ injury: There is a small risk of injury to organs, such as the heart, lungs, or esophagus, during surgery.

It is important to note that these complications are not all-inclusive and the risks and potential complications may vary based on the type of thoracic surgery performed, the patient’s health status, and other factors. It is always best to consult with a healthcare professional for specific information and guidance related to individual circumstances.