Pleural controversy: close needle pleural biopsy or thoracoscopy-which first?

Area of Science:

• Pulmonology
• Thoracic Surgery
• Diagnostic Imaging

Background:

• The optimal diagnostic strategy for pleural exudates is debated.
• Key factors include the yield of thoracocentesis, closed pleural biopsy, and thoracoscopy.
• The role of imaging modalities in improving diagnostic yield is crucial.

Purpose of the Study:

• To evaluate the diagnostic yields of various procedures for pleural exudates.
• To assess the incremental benefit of combining diagnostic methods.
• To determine the cost-effectiveness and accessibility of different diagnostic approaches.

Main Methods:

• Review of diagnostic yields for thoracocentesis, closed pleural biopsy, and thoracoscopy.
• Analysis of sequential investigation strategies.
• Evaluation of image-guided biopsy techniques (CT and ultrasound).

Main Results:

• Thoracentesis yields ~60% for malignancy and >90% for tuberculosis.
• Thoracoscopy shows high yields (91-95% for malignancy, 100% for tuberculosis) but has limited accessibility.
• Image-assisted pleural biopsy can achieve high yields (~88% for malignancy), offering an alternative to thoracoscopy.

Conclusions:

• Image-assisted pleural biopsy following thoracocentesis is a cost-effective alternative to thoracoscopy.
• Thoracoscopy may be reserved for cases undiagnosed by less invasive methods.
• The choice of diagnostic approach should consider yield, cost, and resource availability.