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Related Concept Videos

Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

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Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
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Rous Sarcoma Virus (RSV) and Cancer01:03

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Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand  RNA genome. Its genome consists of four main open...
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Pulmonary Tuberculosis III01:31

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Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
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Pulmonary Tuberculosis I01:29

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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...
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Secondary Lymphoid Organs01:15

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Secondary organs, including lymph nodes, the spleen, and mucosa-associated lymphoid tissue (MALT), work harmoniously to protect us from disease and infection.
The spleen is a vital organ in the lymphatic system, nestled in the upper left side of the abdomen. It is composed of two primary regions: the red pulp and the white pulp, each having distinct functions. The red pulp performs a significant role in blood filtration. It efficiently purges the blood of old or damaged red blood cells and...
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Updated: Apr 6, 2026

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
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Sarcoidosis.

Letha Smith

    Workplace Health & Safety
    |August 5, 2015
    PubMed
    Summary

    Sarcoidosis, a granulomatous disease, requires careful occupational health assessments. Understanding its risks is crucial for protecting workers in various environments.

    Area of Science:

    • Occupational Health
    • Pulmonology
    • Immunology

    Background:

    • Sarcoidosis is an inflammatory disease characterized by granulomas.
    • Early detection in the workplace is essential for risk management.
    • Requires specialized medical review for affected workers.

    Purpose of the Study:

    • To highlight the importance of identifying sarcoidosis in pre-employment screenings.
    • To emphasize the need for occupational health nurses to understand sarcoidosis risks.
    • To inform strategies for protecting worker health.

    Main Methods:

    • Case identification through post-offer examination.
    • Review of occupational risks associated with sarcoidosis.
    • Literature review on sarcoidosis pathophysiology and management.
    Keywords:
    autoimmune diseasegranulomasarcoidosisworker health

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    Main Results:

    • Sarcoidosis was identified in a worker during an initial examination.
    • The disorder necessitates careful evaluation before exposure to environmental stressors.
    • Specific workplace activities like respirator use and international travel pose risks.

    Conclusions:

    • Occupational health nurses play a vital role in managing workers with sarcoidosis.
    • Understanding sarcoidosis pathophysiology is key to implementing protective measures.
    • Proactive health surveillance is critical for worker safety.