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Related Concept Videos

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:
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,...
Pleura of the Lungs01:13

Pleura of the Lungs

The lungs are nestled in a cavity, shielded by the pleura. The pleura, a form of serous membrane, wraps around each lung. This membrane arrangement consists of two layers: the visceral and parietal pleurae. The visceral pleura lines the surface of the lungIn contrast, the parietal pleura is the outer layer and contacts to the thoracic wall, the mediastinum, and the diaphragm. The hilum is the point of connection between the visceral and parietal layers. The space between the parietal and...
Lymphatic Vessels and Lymph Transport01:16

Lymphatic Vessels and Lymph Transport

Lymphatic vessels, known as lymphatics, are crucial in transporting lymph from peripheral tissues to our venous system. This process begins with lymph entering through tiny capillaries that branch through tissues. These capillaries have unique features such as larger diameters, thinner walls, and a distinctive one-way valve system formed by overlapping endothelial cells.
This one-way system allows fluids, solutes, and even pathogens to enter but prevents their return to the intercellular spaces.
Pleural Disorders: Types and Brief Description01:30

Pleural Disorders: Types and Brief Description

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:
Pneumothorax II: Pathophysiology01:08

Pneumothorax II: Pathophysiology

Pneumothorax means the presence of air in the pleural space — the thin potential gap between the visceral and parietal pleura. This condition disrupts the normal pressure balance that keeps the lungs inflated, leading to partial or complete collapse of the affected lung.Normal physiologyUnder normal conditions, the pleural space maintains a slightly negative intrapleural pressure, which keeps the lungs expanded against the chest wall. This negative pressure creates a delicate balance between...

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Related Experiment Video

Updated: May 13, 2026

Local Anesthetic Thoracoscopy for Undiagnosed Pleural Effusion
03:22

Local Anesthetic Thoracoscopy for Undiagnosed Pleural Effusion

Published on: November 10, 2023

[Pleural lymphatics and effusions].

P Mordant1, A Arame, A Legras

  • 1Service de chirurgie thoracique, université Paris Descartes, hôpital européen Georges-Pompidou, 20-40, rue Leblanc, 75015 Paris, France.

Revue De Pneumologie Clinique
|March 26, 2013
PubMed
Summary
This summary is machine-generated.

The pleural lymphatic system actively resorbs fluid and debris via specialized openings in the parietal pleura. This continuous lymphatic pumping maintains pleural void pressure and is crucial for lung health.

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Last Updated: May 13, 2026

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Isolation of Human Lymphatic Endothelial Cells by Multi-parameter Fluorescence-activated Cell Sorting
07:36

Isolation of Human Lymphatic Endothelial Cells by Multi-parameter Fluorescence-activated Cell Sorting

Published on: May 1, 2015

Area of Science:

  • Anatomy
  • Physiology
  • Cell Biology

Background:

  • The pleura, composed of mesothelial cells, lines the thoracic cavity and lungs.
  • The pleural lymphatic system is responsible for fluid resorption and maintaining pleural space homeostasis.
  • Specialized openings (stomata) on the parietal pleura facilitate pleural fluid absorption.

Purpose of the Study:

  • To elucidate the structure and function of the pleural lymphatic system.
  • To highlight the absorptive capacity of the pleura and its role in fluid dynamics.
  • To emphasize the contribution of lymphatic pumping to pleural void pressure.

Main Methods:

  • Histological examination of pleural tissues.
  • Physiological studies on lymphatic vessel function.
  • Analysis of pleural fluid composition and absorption pathways.

Main Results:

  • The parietal pleura, unlike the visceral pleura, possesses stomata connecting the pleural space to lymphatic vessels.
  • Pleural fluid absorption is an active process driven by the contractile function of lymphatic vessels.
  • The continuous lymphatic pumping generates the negative pressure characteristic of the pleural cavity.

Conclusions:

  • The pleural lymphatic system, particularly through stomata in the parietal pleura, plays a vital role in fluid balance and waste removal.
  • Lymphatic vessel contractility is essential for maintaining pleural void pressure, a unique physiological property.
  • Understanding pleural lymphatic function is critical for addressing conditions involving pleural effusions and fluid accumulation.