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Related Concept Videos

Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

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...
Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

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:
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.
Rous Sarcoma Virus (RSV) and Cancer01:03

Rous Sarcoma Virus (RSV) and Cancer

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...
Rous Sarcoma Virus (RSV) and Cancer01:03

Rous Sarcoma Virus (RSV) and Cancer

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...
Fungal Phylum Microsporidia01:28

Fungal Phylum Microsporidia

Microsporidia are a group of obligate intracellular fungi that were initially classified as protists but were later reclassified based on phylogenetic, molecular, and structural evidence linking them to the Chytridiomycota. These unicellular, non-motile organisms are highly specialized parasites that infect a wide range of animal hosts, including humans. They have evolved extensive genomic and metabolic reductions, making them highly dependent on their hosts for survival.Morphology and Genomic...

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Related Experiment Video

Updated: May 7, 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

Sarcoidosis.

Charles A Sola, Cory V Trickett, Kimberly A Lehman

    Journal of Special Operations Medicine : a Peer Reviewed Journal for SOF Medical Professionals
    |September 20, 2013
    PubMed
    Summary
    This summary is machine-generated.

    This report details a case of cutaneous sarcoidosis, focusing on the diagnostic approach and treatment strategies for papular lesions on the neck. It outlines key questions, examination findings, differential diagnoses, and necessary laboratory tests for effective patient management.

    Related Experiment Videos

    Last Updated: May 7, 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:

    • Dermatology
    • Internal Medicine
    • Pathology

    Background:

    • Cutaneous sarcoidosis presents with diverse clinical manifestations, often affecting the skin.
    • Early and accurate diagnosis is crucial for appropriate management and preventing systemic involvement.

    Purpose of the Study:

    • To describe the morphology of papular lesions in a case of cutaneous sarcoidosis.
    • To outline a comprehensive diagnostic and treatment strategy for cutaneous sarcoidosis.

    Main Methods:

    • Clinical presentation of an active duty male with enlarging papules on the neck.
    • Review of diagnostic criteria, including patient history, physical examination, and laboratory tests.
    • Discussion of differential diagnoses for papular skin lesions.

    Main Results:

    • The report focuses on the diagnostic process rather than specific numerical results.
    • It emphasizes the systematic approach to identifying cutaneous sarcoidosis.

    Conclusions:

    • Cutaneous sarcoidosis requires a thorough evaluation including detailed history, physical examination, and targeted investigations.
    • Effective management involves accurate diagnosis and tailored treatment plans.