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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

Pleural Effusion II: Symptoms and Management

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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

Behavior of Gas Molecules: Molecular Diffusion, Mean Free Path, and Effusion

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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

Pleural Disorders: Types and Brief Description

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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: Jan 20, 2026

Local Anesthetic Thoracoscopy for Undiagnosed Pleural Effusion
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Local Anesthetic Thoracoscopy for Undiagnosed Pleural Effusion

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Tuberculous pleural effusion.

Jane A Shaw1, Andreas H Diacon1, Coenraad F N Koegelenberg1

  • 1Division of Pulmonology, Department of Medicine, Tygerberg Academic Hospital and Stellenbosch University, Cape Town, South Africa.

Respirology (Carlton, Vic.)
|August 17, 2019
PubMed
Summary
This summary is machine-generated.

Tuberculous effusion, a lung condition, can range from mild to severe, impacting lung function. Diagnosis involves pleural fluid analysis and may require invasive tests, with drug resistance posing a growing challenge.

Keywords:
extra-pulmonarypleural biopsypleural effusiontuberculosistuberculosis empyema

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Area of Science:

  • Pulmonology
  • Infectious Diseases
  • Thoracic Medicine

Background:

  • Tuberculous effusion presents a spectrum of severity, from benign to complicated forms like empyema, potentially causing long-term lung dysfunction.
  • Its pathogenesis involves pleural infection and hypersensitivity reactions within the pleural space.

Purpose of the Study:

  • To review the diagnosis, management, and emerging challenges of tuberculous effusion.
  • To highlight the role of diagnostic thoracentesis, biomarkers, and advanced molecular tests.

Main Methods:

  • Review of diagnostic approaches including thoracentesis, pleural fluid analysis (adenosine deaminase, interferon-gamma), and histological/microbiological confirmation.
  • Discussion of drug resistance detection using nucleic acid amplification tests (Xpert MTB/RIF).
  • Evaluation of treatment strategies, including standard and individualized anti-tuberculous therapy, and adjunctive interventions.

Main Results:

  • Diagnostic thoracentesis with biomarker analysis offers high accuracy in appropriate clinical settings.
  • Drug resistance is an increasing concern, necessitating comprehensive sensitivity profiling.
  • Nucleic acid amplification tests show limited yield in pleural fluid but are valuable for resistance detection.

Conclusions:

  • Accurate diagnosis of tuberculous effusion relies on a combination of clinical context, fluid analysis, and potentially invasive procedures.
  • Managing drug-resistant tuberculous effusion requires vigilant monitoring and tailored treatment regimens.
  • While adjunctive therapies show some promise, further research is needed to establish their efficacy and safety.