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[Thoracoscopy in the staging of tumors of the lung].

The Authors review the results of thoracoscopy in 15 cases of pleural effusions concomitant with tumours of the lungs. In addition to defining the aetiology of the pleural effusion, the investigation completes the staging of the malignancy and affords both the possibility of reducing the number of exploratory thoracotomies and of resolving a number of cases at exeresis.