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Related Concept Videos

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:
Pulmonary Tuberculosis IV01:26

Pulmonary Tuberculosis IV

Tuberculosis, more commonly referred to as TB, is an infectious disease stemming from Mycobacterium tuberculosis. While it primarily impacts the lungs, TB can also affect other body areas. Given its severity and global impact, timely and accurate diagnosis is crucial for controlling its spread and improving patient outcomes.
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
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
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...
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 V01:28

Pulmonary Tuberculosis V

Medical management of tuberculosis (TB) patients involves a comprehensive approach that includes diagnosis, treatment, and monitoring. The specific strategies can vary depending on the type of tuberculosis (latent or active), the patient's overall health status, and other considerations.
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the progression...
Tuberculosis01:23

Tuberculosis

Tuberculosis (TB) remains a significant global health concern, primarily targeting the lungs and spreading through airborne transmission. Infection begins when aerosolized droplet nuclei, expelled by an individual with active TB, are inhaled by another person. These microscopic particles carry Mycobacterium tuberculosis, the causative agent of TB. Upon reaching the alveoli, the bacilli are engulfed by alveolar macrophages. However, due to their specialized lipid-rich cell wall, these pathogens...

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Related Experiment Video

Updated: Jun 9, 2026

Intradermal Inoculation of Mycobacterium avium in the Mouse Ear
09:20

Intradermal Inoculation of Mycobacterium avium in the Mouse Ear

Published on: July 3, 2025

Upper extremity Mycobacterium marinum infection.

M H El Amrani1, M Adoui, O Patey

  • 1Department of Orthopaedic Surgery and Traumatology, Villeneuve-Saint-Georges Hospital Center, 40, allée de la source, 94195 Villeneuve-Saint-Georges, France. Hicham.ELAMRANI@chiv.fr

Orthopaedics & Traumatology, Surgery & Research : OTSR
|September 4, 2010
PubMed
Summary

Early diagnosis of Mycobacterium marinum infections is crucial for effective treatment and preventing complications. Orthopaedic surgeons should recognize aquatic exposure history and clinical signs for prompt identification of this opportunistic pathogen.

Related Experiment Videos

Last Updated: Jun 9, 2026

Intradermal Inoculation of Mycobacterium avium in the Mouse Ear
09:20

Intradermal Inoculation of Mycobacterium avium in the Mouse Ear

Published on: July 3, 2025

Area of Science:

  • Infectious Diseases
  • Orthopaedics
  • Dermatology

Background:

  • Mycobacterium marinum causes opportunistic infections, often presenting cutaneously but also affecting osteoarticular structures.
  • Rapid diagnosis is essential for managing M. marinum infections, particularly in orthopaedic cases.

Observation:

  • Lesions typically arise from skin wounds, appearing as nodules or purplish-red patches, potentially with papules, inflammation, or abscess formation.
  • Secondary lesions can develop as the infection progresses.
  • A history of aquatic exposure is a key diagnostic clue.

Findings:

  • Three cases of M. marinum infection with delayed diagnosis are presented.
  • Early diagnosis correlates with better treatment response and fewer complications.

Implications:

  • Orthopaedic surgeons must be aware of M. marinum's clinical presentation and diagnostic criteria.
  • Prompt identification and treatment of M. marinum infections can significantly improve patient outcomes and reduce morbidity.