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Related Concept Videos

Rocky Mountain Spotted Fever01:26

Rocky Mountain Spotted Fever

Rocky Mountain Spotted Fever (RMSF) is a severe tick-borne illness caused by Rickettsia rickettsii, a Gram-negative, coccobacillary bacterium. This pathogen is an obligate intracellular parasite, requiring a host cell for replication. Transmission occurs through the bite of an infected tick. In the United States, the most important vectors are Dermacentor variabilis (American dog tick) and Dermacentor andersoni (Rocky Mountain wood tick), though other tick species may also serve as vectors.
Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

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Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

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Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

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
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Rous Sarcoma Virus (RSV) and Cancer01:03

Rous Sarcoma Virus (RSV) and Cancer

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Related Experiment Video

Updated: Jun 24, 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].

A Prasse1, J Müller-Quernheim

  • 1Abteilung für Pneumologie, Universitätsklinikum Freiburg, Freiburg.

Der Internist
|April 16, 2009
PubMed
Summary
This summary is machine-generated.

Sarcoidosis, a lung disease of unknown cause, frequently affects younger individuals. Diagnosis involves identifying granulomas and excluding other conditions, with treatment ranging from observation to immunosuppressants.

Related Experiment Videos

Last Updated: Jun 24, 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
  • Immunology
  • Pathology

Context:

  • Sarcoidosis is a prevalent interstitial lung disease with unknown etiology.
  • It often affects younger populations and is more common in Germany than tuberculosis.
  • Diagnosis requires identifying non-necrotizing granulomas in lung tissue and ruling out other granulomatous diseases.

Purpose:

  • To provide a comprehensive overview of sarcoidosis, including its diagnosis, etiology, and management.
  • To highlight the diagnostic criteria and differential diagnoses for sarcoidosis.
  • To discuss the clinical course and therapeutic strategies for sarcoidosis.

Summary:

  • Sarcoidosis is characterized by epithelioid granulomas in the lungs, often diagnosed via bronchoscopy and bronchoalveolar lavage.
  • While many cases resolve spontaneously, approximately one-third develop chronic disease requiring systemic treatment.
  • Prednisolone is a primary treatment, with azathioprine or methotrexate considered for progressive cases unresponsive to initial therapy.

Impact:

  • This information aids clinicians in diagnosing and managing sarcoidosis effectively.
  • Understanding the disease course and treatment options can improve patient outcomes.
  • Further research into sarcoidosis etiology may lead to targeted therapies.