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Related Concept Videos

Pleural Effusion I: Introduction01:25

Pleural Effusion I: Introduction

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 criteria,...
Pleural Effusion II: Symptoms and Management01:28

Pleural Effusion II: Symptoms and Management

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:
Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Pulmonary Tuberculosis IV01:26

Pulmonary Tuberculosis IV

Tuberculosis, more commonly referred to as TB, is an infectious disease stemming from Mycobacterium tuberculosis. While it primarily impacts the lungs, TB can also affect other body areas. Given its severity and global impact, timely and accurate diagnosis is crucial for controlling its spread and improving patient outcomes.
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...

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Updated: May 19, 2026

Local Anesthetic Thoracoscopy for Undiagnosed Pleural Effusion
03:22

Local Anesthetic Thoracoscopy for Undiagnosed Pleural Effusion

Published on: November 10, 2023

Tuberculous pleural effusion.

Shira A Schlesinger1, Philips Perera

  • 1Los Angeles County + USC Medical Center, Department of Emergency Medicine, Los Angeles, California.

The Western Journal of Emergency Medicine
|September 4, 2012
PubMed
Summary
This summary is machine-generated.

Tuberculous pleural effusion, a common emergency department finding, can now be diagnosed using a classic sonographic appearance. This imaging technique offers a non-invasive diagnostic alternative to traditional cytologic analysis for pleural effusions.

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Area of Science:

  • Medicine
  • Radiology
  • Pulmonology

Background:

  • Pleural effusions are frequently encountered in emergency settings.
  • Definitive diagnosis traditionally relies on cytologic analysis of pleural fluid.
  • Tuberculosis remains a significant cause of pleural effusion globally.

Purpose of the Study:

  • To describe the characteristic sonographic features of tuberculous pleural effusion.
  • To highlight ultrasound as a potential diagnostic tool for this condition.
  • To provide clinicians with imaging criteria for suspecting tuberculous pleural effusion.

Main Methods:

  • Retrospective review of ultrasound images in patients with confirmed tuberculous pleural effusion.
  • Correlation of sonographic findings with cytologic and microbiologic results.
  • Description of the 'classic' sonographic appearance.

Main Results:

  • Tuberculous pleural effusion exhibits a distinct sonographic pattern.
  • Ultrasound can identify specific characteristics indicative of tuberculosis.
  • The described sonographic appearance aids in early suspicion of the diagnosis.

Conclusions:

  • A classic sonographic appearance is described for tuberculous pleural effusion.
  • Ultrasound offers a valuable, non-invasive method for diagnosing pleural effusions.
  • Sonography can guide further diagnostic workup in suspected tuberculous pleural effusion.