Increase of intraocular pressure during nasal CPAP.

Late complications of collapse therapy generally present as pyogenic, caseous, or mycotic empyema’4 at the site of the previous pneumothorax. Hemorrhagic effusion associated with pleural malignant change has been reported. To our knowledge, extrapleural hematoma without malignancy has not yet been described. Our patient’s medical history excluded external violence or traumatic thoracentesis. Although prothrombin values were within the therapeutic range, transient overanticoagulation most probably enhanced pleural bleeding. We believe that pleuropulmonary decortication was the appropriate treatment, suppressing the pocket that might have become infected by repeated centesis or tube thoracostomy and allowing full pulmonary expansion.2