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Related Concept Videos

Chronic Obstructive Pulmonary Disease-II: Pathophysiology01:20

Chronic Obstructive Pulmonary Disease-II: Pathophysiology

Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
Chronic Inflammation
Other Pulmonary Disorders01:17

Other Pulmonary Disorders

Respiratory disorders encompass a range of conditions with varying levels of severity. Asthma, marked by chronic airway inflammation and hypersensitivity, is one such condition. It can lead to airway obstruction due to factors like bronchial spasms, mucosal edema, increased mucus secretion, or epithelial damage. Asthma triggers are diverse, ranging from allergens to emotional upset, and treatment focuses on both immediate relief through bronchodilators and long-term inflammation suppression.
Bone Formation by Endochondral Ossification01:24

Bone Formation by Endochondral Ossification

Bone formation, or ossification, begins around the sixth to seventh week of embryonic development. Most bones develop from a cartilaginous template through the process of endochondral ossification. Cartilage formation begins when clusters of mesenchymal cells differentiate into chondrocytes. These chondrocytes proliferate rapidly and secrete an extracellular matrix that becomes encased in a membrane called the perichondrium. The resulting cartilage model provides a template that resembles the...
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Degenerative Disc Disease I: Introduction

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Chronic Obstructive Pulmonary Disease II: Emphysema01:23

Chronic Obstructive Pulmonary Disease II: Emphysema

Emphysema, a major phenotype of chronic obstructive pulmonary disease (COPD), is characterized by irreversible destruction of alveolar walls and permanent enlargement of distal airspaces. Unlike chronic bronchitis, which primarily affects the airways, emphysema predominantly involves the lung parenchyma, where structural damage leads to airflow limitation.PathophysiologyIt most commonly results from prolonged exposure to cigarette smoke and other toxic gases, particularly cigarette smoke.
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Chronic Obstructive Pulmonary Disease IV: Clinical Manifestations

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Related Experiment Video

Updated: May 27, 2026

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
04:44

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease

Published on: June 16, 2020

Idiopathic dendriform pulmonary ossification.

Taryn L Reddy1, Jan von der Thüsen, Simon L F Walsh

  • 1Royal Brompton Hospital, London, UK.

Journal of Thoracic Imaging
|December 6, 2011
PubMed
Summary
This summary is machine-generated.

Diffuse dendriform pulmonary ossification is a rare lung disorder with branching bone growth. This case report details an idiopathic presentation in a 34-year-old man investigated for hemoptysis.

Related Experiment Videos

Last Updated: May 27, 2026

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
04:44

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease

Published on: June 16, 2020

Area of Science:

  • Pulmonary Medicine
  • Radiology
  • Pathology

Background:

  • Diffuse dendriform pulmonary ossification (DDPO) is a rare condition.
  • It involves widespread, branching bone formation in the lungs.
  • Often associated with chronic lung inflammation and fibrosis, but can be idiopathic.

Observation:

  • A case of idiopathic DDPO is presented.
  • The patient is a 34-year-old male.
  • He presented with hemoptysis.

Findings:

  • Computed tomography (CT) shows fine, branching heterotopic bone within the lungs.
  • Ossification often has a lower lobe predominance.
  • The exact pathogenesis of idiopathic DDPO remains unclear.

Implications:

  • Highlights the varied presentations of pulmonary ossification.
  • Emphasizes the role of CT in diagnosing rare lung diseases.
  • Contributes to understanding idiopathic forms of DDPO.