Related Experiment Video
Updated: Nov 16, 2025
10:45
A Silicosis Mouse Model Established by Repeated Inhalation of Crystalline Silica Dust
Published on: January 6, 2023
2.6K
[Silicosis and hemoptysis]
C Faubry1, L Grassion1, C Raherison-Semjen1
1Service des maladies respiratoires, Professeur Tunon-de-Lara, CHU de Bordeaux, avenue de Magellan, 33604 Pessac, France.
Revue Des Maladies Respiratoires
|February 22, 2021
Summary
This case study highlights that while haemoptysis is common in pneumoconiosis, it is not a classic complication of isolated silicosis. The bleeding in this patient stemmed from complications associated with silicosis.
Area of Science:
- Pulmonary Medicine
- Occupational Lung Diseases
Background:
- Pneumoconiosis is a diffuse interstitial lung disease caused by inhaling mineral particles.
- Haemoptysis is a frequent symptom in pneumoconiosis, often linked to secondary conditions like bronchiectasis or tuberculosis in silicosis.
- Chronic silicosis can lead to respiratory failure.
Purpose of the Study:
- To investigate the aetiology of haemoptysis in a patient with chronic silicosis.
- To determine if haemoptysis can occur as a direct complication of isolated silicosis.
Main Methods:
- Case report of a 74-year-old man with chronic silicosis and haemoptysis.
- Diagnostic imaging including CT angiography.
- Endoscopic procedures such as fibreoptic bronchoscopy and endobronchial ultrasound-guided needle aspiration.
- Pathological examination of trans-bronchial biopsies and mediastinal lymph nodes.
Main Results:
- CT angiography showed bilateral fibrosing peri-hilar masses, nodules, and mediastinal lymphadenopathy.
- Bronchoscopy revealed an anthracotic appearance with silicosis-typical lesions.
- Pathology confirmed silicosis in biopsies and lymph node aspirates.
- No active bleeding source was identified, and no cause other than silicosis complications was found.
Conclusions:
- Haemoptysis in this patient was attributed to complications of silicosis, not isolated silicosis itself.
- While haemoptysis is common in pneumoconiosis, it typically arises from secondary complications.
- This case underscores the importance of a thorough aetiological assessment for haemoptysis in patients with known silicosis.
Related Concept Videos
01:17Other Pulmonary Disorders
1.1K
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.
1.1K
01:29Pulmonary Tuberculosis I
494
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...
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...
494
01:20COPD: Pathogenesis and Clinical Features
1.5K
Chronic obstructive pulmonary disease (COPD) is a group of lung conditions that progressively worsen over time, including chronic bronchitis and emphysema. This cluster of diseases collectively leads to a gradual and irreversible decline in lung function over time.
The primary cause for the onset of COPD is cigarette smoking and exposure to air pollution. These hazardous factors initiate a chain reaction within the lungs, resulting in chronic inflammation, damage to the airways, and a...
The primary cause for the onset of COPD is cigarette smoking and exposure to air pollution. These hazardous factors initiate a chain reaction within the lungs, resulting in chronic inflammation, damage to the airways, and a...
1.5K
01:25Chronic Obstructive Pulmonary Disease-III: Symptoms and Complications.
3.2K
Understanding the variety of primary symptoms and systemic complications that characterize chronic obstructive pulmonary disease (COPD) is crucial for healthcare professionals.
Symptoms of COPD can be classified as primary or systemic. Primary symptoms relate to reduced airflow, while systemic or extrapulmonary symptoms relate to COPD's broader impact on the body.
Primary Symptoms of COPD:
Symptoms of COPD can be classified as primary or systemic. Primary symptoms relate to reduced airflow, while systemic or extrapulmonary symptoms relate to COPD's broader impact on the body.
Primary Symptoms of COPD:
3.2K
01:20Chronic Obstructive Pulmonary Disease-II: Pathophysiology
3.7K
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
Chronic Inflammation
3.7K
01:29Pneumonia II: Pathophysiology
1.7K
The pathophysiology of pneumonia involves the following steps:
1.7K