Abstract

INTRODUCTION: Pleural effusions can develop with airway obstruction due to atelectasis, postobstructive pneumonia, and/ or malignant pleural studding. Even in the presence of an endobronchial malignancy a significant percentage of these effusions have nonmalignant cytology. This poses a staging dilemma due to the poor sensitivity of thoracentesis. This dilemma leads to lack of confidence in staging, need for further procedures and delays in therapy.Thoracentesis with pleural manometry is used to diagnose trapped lung, safely relieve symptoms, and predict outcome of pleurodesis for malignant effusions.(1,2) The effect of endobronchial intervention on pleural pressures has not been studied.

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