Tuberculous pleural effusion and tuberculous empyema

Area of Science:

• Pulmonology
• Infectious Diseases
• Immunology

Background:

• Tuberculous pleuritis incidence is rising globally, particularly in developing nations, often associated with HIV co-infection.
• It represents a delayed hypersensitivity reaction to mycobacterial antigens within the pleural space.
• While mycobacteria are found in less than 50% of samples, pleural biopsy reveals characteristic granulomas in 56-80% of cases.

Purpose of the Study:

• To review diagnostic methods for tuberculous pleuritis.
• To discuss treatment strategies for tuberculous pleuritis and its rare complication, tuberculous empyema.
• To highlight the diagnostic utility of pleural fluid parameters and emerging tests.

Main Methods:

• Review of diagnostic yield of pleural fluid parameters, including adenosine deaminase and interferon gamma (IFN-γ).
• Evaluation of percutaneous pleural biopsy for identifying granulomatous inflammation.
• Assessment of polymerase chain reaction (PCR) as a diagnostic tool.
• Discussion of treatment protocols for tuberculous pleuritis and empyema.

Main Results:

• Adenosine deaminase and IFN-γ show the highest diagnostic yield among pleural fluid markers.
• Percutaneous pleural biopsy is effective in diagnosing tuberculous pleuritis even when bacilli are not detected.
• Polymerase chain reaction (PCR) presents a promising diagnostic approach.
• Tuberculous empyema requires pleural space drainage, lung reexpansion, and antituberculous chemotherapy.

Conclusions:

• Early and accurate diagnosis of tuberculous pleuritis is crucial, utilizing a combination of clinical, microbiological, and biochemical methods.
• Interferon-gamma (IFN-γ) and adenosine deaminase are valuable biomarkers for tuberculous pleuritis diagnosis.
• Management of tuberculous pleuritis, especially empyema, necessitates prompt drainage and comprehensive antituberculous therapy.