Thoracotomy and video-assisted thoracic surgery procedures are frequently performed in thoracic surgery. It is widely accepted that thoracotomy causes severe acute pain. This prolongs the discharge time of the patients, and increases the frequency of postoperative pulmonary complications and postoperative morbidity. Postoperative acute pain may cause chronic thoracotomy pain in the later period, and may adversely affect the quality of life of the patients. Video-assisted thoracic surgery (VATS) has become the standard procedure in minor and major lung surgeries. Postoperative pain is seen in patients undergoing VATS, although it is not as severe as after thoracotomy. As in thoracotomy, this affects the postoperative pulmonary complications and the discharge time of the patients. Likewise, this pain can cause chronic pain.

In this study, it was aimed to analyze the symptoms of chronic pain in the 3rd and 6th months postoperatively in patients who had undergone thoracic surgery.

Inclusion Criteria:

• Age between 18 and 65 years
• American Society of Anesthesiologists physical status I-II-III
• Body mass index between 18-35 kg/m2
• Patients undergoing elective thoracic surgery

Exclusion Criteria:

• Advanced cancer
• History of chronic analgesic therapy
• Patients with previous thoracic surgery
• Patients who were operated under emergency conditions

Patients between the ages of 18-65 years, in the ASA I-II-III risk group, with a BMI between 18-35 kg/m2 and undergoing thoracic surgery will be included in our study.

Patients under the age of 18 years and over the age of 65 years, with an ASA score of IV and above, with a BMI below 18 kg/m2 and above 35 kg/m2, who were operated under emergency conditions, and who received chronic pain treatment will be excluded from the study.