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Updated: May 22, 2026

Local Anesthetic Thoracoscopy for Undiagnosed Pleural Effusion
Published on: November 10, 2023
The role of pleuroscopy in undiagnosed exudative pleural effusion
1Department of Respiratory Medicine, Apollo Hospitals, Chennai, India.
Aims:
To find the diagnostic yield of a pleuroscopic pleural biopsy and to find the complication rates.
Settings And Design:
Institutional based prospective study.
Materials And Methods:
Sixty-eight consecutive patients who had undiagnosed exudative pleural effusion were recruited for pleuroscopy from September 2007 to August 2010.
Results:
A total of 68 patients (55 males and 13 females; mean age 49 years) underwent pleuroscopy. Malignancy was diagnosed in 24 patients, 22 patients had non-specific inflammation, tuberculosis was found in 16 patients, empyema was found in 2 patients, 1 patient had sarcoidosis, 1 patient had normal pleura and it was non-diagnostic in 2 patients. The diagnostic yield was 97%. There were no major complications, only four patients had minor complication like subcutaneous emphysema (three patients) and prolonged air leak (one patient).
Conclusions:
Pleuroscopy is a safe, simple, and valuable tool in the diagnosis of undiagnosed exudative pleural effusion with minimal complication rates.
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