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Related Concept Videos

Chronic Obstructive Pulmonary Disease-II: Pathophysiology01:20

Chronic Obstructive Pulmonary Disease-II: Pathophysiology

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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:
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Other Pulmonary Disorders01:17

Other Pulmonary Disorders

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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.
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Asthma-II: Pathophysiology and Classification01:26

Asthma-II: Pathophysiology and Classification

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Asthma is a prevalent chronic respiratory condition marked by inflammation and hyperresponsiveness of the airways. Its pathophysiology involves complex interactions among inflammatory pathways, immune responses, and neural mechanisms.
Additionally, environmental and genetic factors play crucial roles in determining an individual's susceptibility to asthma and the severity of their condition.
Critical processes in asthma pathophysiology include:
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Chronic Obstructive Pulmonary Disease01:22

Chronic Obstructive Pulmonary Disease

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COPD is defined as a heterogeneous lung condition marked by persistent respiratory symptoms such as dyspnea, cough, and sputum production, caused by abnormalities in the airways that cause airflow obstruction.
Smoking is a primary risk factor for COPD, with over 80% of patients having a history of it. Patients typically experience progressive dyspnea or labored breathing, frequent coughing, and recurrent pulmonary infections. Many eventually succumb to respiratory failure, characterized by...
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Chronic Obstructive Pulmonary Disease-I: Introduction01:20

Chronic Obstructive Pulmonary Disease-I: Introduction

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Chronic Obstructive Pulmonary Disease (COPD) is a long-lasting respiratory condition requiring continuous attention and care. It is a progressive lung disease that leads to breathing challenges due to airflow obstruction. It manifests as persistent respiratory symptoms and restricted airflow resulting from abnormalities in the airways and alveoli, usually due to long-term exposure to harmful particles or gases. COPD mainly consists of two primary conditions: emphysema and chronic bronchitis.
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Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies01:27

Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies

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Assessing and diagnosing Chronic Obstructive Pulmonary Disease (COPD) involves a detailed approach that includes a comprehensive review of medical history, physical examination, and a variety of diagnostic tests. This thorough evaluation is essential to ensure an accurate diagnosis and guide effective management strategies.
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Updated: Jan 14, 2026

Author Spotlight: Investigating the Pathophysiology of Eosinophilic Esophagitis
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Author Spotlight: Investigating the Pathophysiology of Eosinophilic Esophagitis

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Eosinophilic Lung Diseases.

Vincent Cottin1

  • 1National Coordinating Reference Center for rare pulmonary diseases, Department of Respiratory Medicine, Louis Pradel Hospital, Hospices Civils de Lyon, ERN-LUNG, INRAE, UMR754, Lyon 1 University, 28 avenue Doyen Lépine, Lyon F-69677, France.

Clinics in Chest Medicine
|October 19, 2025
PubMed
Summary
This summary is machine-generated.

Diagnosing eosinophilic lung disease involves clinical and imaging findings, not typically biopsy. Treatment focuses on identifying and removing causes, alongside glucocorticoids and newer interleukin-5 therapies.

Keywords:
AspergillusEosinophilEosinophilic granulomatosis with polyangiitisEosinophilic pneumoniaInterstitial lung disease

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Area of Science:

  • Pulmonology
  • Immunology

Background:

  • Eosinophilic lung diseases (ELDs) are a group of disorders characterized by eosinophil accumulation in lung tissue.
  • Diagnosis often relies on clinical presentation, imaging, and evidence of alveolar eosinophilia, with biopsy usually reserved for complex cases.

Purpose of the Study:

  • To outline the diagnostic approach to eosinophilic lung disease.
  • To discuss the implications of identifying the etiology of ELDs.
  • To review current and emerging treatment strategies for ELDs.

Main Methods:

  • Review of clinical-imaging features for diagnosis.
  • Exclusion of known causes of eosinophilia, including medications and infections.
  • Assessment of treatment responses to glucocorticoids and targeted therapies.

Main Results:

  • Lung biopsy is generally not required for diagnosing ELDs.
  • Identifying the cause (e.g., drugs, infections, smoking) is crucial for effective management.
  • Idiopathic cases are diagnosed after excluding all other potential causes.

Conclusions:

  • Effective management of ELDs involves addressing the underlying etiology and utilizing anti-inflammatory treatments.
  • Oral glucocorticoids remain a primary treatment, with increasing use of interleukin-5 axis inhibitors.