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Related Concept Videos

Pleural Effusion I: Introduction01:25

Pleural Effusion I: Introduction

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Pleural effusion is an abnormal fluid accumulation in the pleural cavity, a narrow space between the lungs and the chest wall. It is not a disease per se but rather a symptom or indication of an underlying disease. In normal circumstances, this space contains a small amount of fluid (5 to 15 mL), a lubricant facilitating the non-frictional movement of the pleural surfaces.
There are two main types of pleural effusion: transudative and exudative. They are differentiated using Light's...
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Pleural Effusion II: Symptoms and Management01:28

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Pleural Effusion Overview
A pleural effusion is the abnormal collection of fluid between the parietal and visceral pleura layers of tissue that form the lining of the lungs and chest cavity. It can occur independently or due to surrounding parenchymal diseases, such as infection, malignancy, or inflammatory conditions.
Clinical Manifestations:
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Behavior of Gas Molecules: Molecular Diffusion, Mean Free Path, and Effusion03:48

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Although gaseous molecules travel at tremendous speeds (hundreds of meters per second), they collide with other gaseous molecules and travel in many different directions before reaching the desired target. At room temperature, a gaseous molecule will experience billions of collisions per second. The mean free path is the average distance a molecule travels between collisions. The mean free path increases with decreasing pressure; in general, the mean free path for a gaseous molecule will be...
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Pleural Disorders: Types and Brief Description01:30

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The pleura is a vital part of the respiratory system. It's a double-layered membrane surrounding the lungs and lining the chest cavity. The two layers of the pleura are:
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Related Experiment Video

Updated: Feb 14, 2026

Local Anesthetic Thoracoscopy for Undiagnosed Pleural Effusion
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Tuberculous Pleural Effusion.

Leah A Cohen1, Richard W Light2

  • 1Internal Medicine Resident, Department of Medicine Vanderbilt University Medical Center, Nashville, TN, USA.

Turkish Thoracic Journal
|February 7, 2018
PubMed
Summary
This summary is machine-generated.

Tuberculous pleuritis is a significant risk for patients with tuberculosis (TB). Diagnosing TB pleuritis early, especially in HIV-positive individuals, is crucial for effective treatment and preventing further TB complications.

Keywords:
Tuberculosisadenosine deaminaseempyemagamma interferonpleural biopsypleural effusions

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Area of Science:

  • Pulmonology
  • Infectious Diseases
  • Clinical Medicine

Background:

  • Pleural effusion necessitates consideration of tuberculous (TB) pleuritis.
  • Undiagnosed TB pleuritis increases the risk of pulmonary and extrapulmonary TB.
  • TB pleuritis affects 3-25% of TB patients, with higher incidence in HIV-positive individuals.

Purpose of the Study:

  • To highlight the importance of considering TB pleuritis in new pleural effusion cases.
  • To outline diagnostic methods for TB pleuritis.
  • To emphasize the link between TB pleuritis and overall TB management.

Main Methods:

  • Review of clinical presentation of TB pleuritis.
  • Analysis of pleural fluid characteristics (exudate, lymphocytic predominance).
  • Evaluation of adenosine deaminase (ADA) levels in pleural fluid for diagnosis.

Main Results:

  • Pleural fluid in TB pleuritis is typically an exudate with lymphocyte predominance.
  • A pleural fluid ADA level > 40 IU/L is an easy diagnostic indicator.
  • Tuberculous empyema is a rare but challenging complication.

Conclusions:

  • Early diagnosis of TB pleuritis is vital to prevent progression of TB.
  • Measuring pleural fluid ADA is a key diagnostic tool for TB pleuritis.
  • Treatment for TB pleuritis mirrors that of pulmonary TB.