The diagnostic value of thoracic ultrasound in thoracic surgery consultations: a new tool in pleural effusion decision-making.

Introduction: Thoracic ultrasound (US) is a practical tool in radiology that has been commonly used for decades. Its daily clinic use in thoracic surgery is rising, and scientific evidence is needed to support its use. Aim: We aimed to determine the diagnostic value of handheld, portable thoracic ultrasound scanning (HH-US) in patients referred to the thoracic surgery outpatient clinic with suspected pleural effusion and compare the diagnostic role with chest X-rays (CXR) or computed tomography (CT). Material and methods: We analyzed the patients between 2020 and 2023 who were referred to our outpatient clinic with various symptoms and having differential diagnosis of pleural effusion. In total, 91 patients fulfilled the inclusion criteria. Ultrasonographic (US) scans were performed by thoracic surgeons who were educated and certified in ultrasonography training. All patients underwent US first and then were referred for chest X-ray or computed tomography. All the results were compared focusing on the efficacy of US initially. If the amount of the effusion required drainage, thoracentesis was carried out with US support. The indications, methods, time, and related complications, with demographic data of the patients were recorded and analyzed. Results: There were 57 (62.6%) male and 34 female (37.4%) patients. Only diagnostic thoracentesis was performed in 16 patients, catheter thoracostomy was performed in 47 patients, minimal effusion not requiring pleural intervention was observed in 6 patients (2 patients were trauma patients who applied to the emergency department), minimal effusion was detected in 14 patients, and no intervention was performed. No complications were observed. The sensitivity of US in detecting fluid effusion compared to CXR was 83.3%, while its sensitivity compared to thorax computed tomography (CT) was 88.5%. Conclusions: Proficient thoracic surgeons can effectively employ ultrasound devices for diagnosing and managing pleural effusions. This would be helpful for decision making and treatment.