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Related Concept Videos

Pneumothorax-II01:27

Pneumothorax-II

Pneumothorax is a medical condition defined by the buildup of air in the pleural space between the lungs and the chest wall. This accumulation of air can lead to partial or complete lung collapse, resulting in a range of clinical manifestations. Understanding the clinical presentation and effective management strategies is crucial for healthcare professionals in providing timely and appropriate care to individuals with pneumothorax.
Clinical Manifestations:
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...
Pneumothorax-I01:26

Pneumothorax-I

A pneumothorax is a condition where air builds up in the space between the lung and the chest wall, causing the lung to collapse. This condition arises when air enters the space between the parietal and visceral pleura, disrupting the negative pressure essential for lung inflation. This can lead to a partial or complete collapse of the lung.
Pneumothorax can be even further classified as spontaneous, traumatic, and tension pneumothorax.
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...
Cranial Bones: Lateral View01:27

Cranial Bones: Lateral View

The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...

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Related Experiment Video

Updated: May 17, 2026

Three-Dimensional Reconstruction of Orbital Fractures
08:18

Three-Dimensional Reconstruction of Orbital Fractures

Published on: May 16, 2025

Orbital pneumatocele.

Surinder K Singhai1, Arjun Dass, G B Singh

  • 1Department of Ear, Nose, Throat, Government Medical College, Hospital, 160 030 Chandigarh.

Indian Journal of Otolaryngology and Head and Neck Surgery : Official Publication of the Association of Otolaryngologists of India
|November 3, 2012
PubMed
Summary
This summary is machine-generated.

Spontaneous orbital pneumatocele, a rare condition of air in the eye socket, can occur after sneezing. This case highlights an unusual frontoethmoid junction communication, offering insights into this uncommon orbital air collection.

Keywords:
Orbital Pneumatoceleorbital emphysema

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Three-Dimensional Reconstruction of Orbital Fractures
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Rotating the Intraocular Lens to Prevent Posterior Capsular Opacification in Cataract Surgeries
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Area of Science:

  • Ophthalmology
  • Otorhinolaryngology
  • Radiology

Background:

  • Orbital air, or pneumatocele, is typically caused by trauma.
  • Spontaneous orbital pneumatocele is an exceptionally rare clinical finding.

Purpose of the Study:

  • To report a unique case of spontaneous orbital pneumatocele.
  • To investigate the etiology and anatomical communication of this rare condition.

Main Methods:

  • Case report of a patient presenting with spontaneous orbital pneumatocele.
  • Review of relevant medical literature on orbital pneumatocele.

Main Results:

  • The spontaneous orbital pneumatocele occurred following forceful sneezing and nasal clearing.
  • A rare communication pathway at the frontoethmoid junction was identified as the likely cause.

Conclusions:

  • Spontaneous orbital pneumatocele can occur without direct trauma.
  • The frontoethmoid junction represents a rare but possible site for orbital air entry.