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Related Concept Videos

Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

1.3K
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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Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

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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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Pulmonary Tuberculosis IV01:26

Pulmonary Tuberculosis IV

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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...
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Pulmonary Tuberculosis V01:28

Pulmonary Tuberculosis V

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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...
506
Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

856
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:
856
Other Pulmonary Disorders01:17

Other Pulmonary Disorders

1.4K
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.
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Related Experiment Video

Updated: Jan 3, 2026

Analysis of 18FDG PET/CT Imaging as a Tool for Studying Mycobacterium tuberculosis Infection and Treatment in Non-human Primates
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Tuberculosis presenting as dacryoadenitis in the USA.

Harry Ross Powers1, Mark Anthony Diaz1, Julio C Mendez2

  • 1Division of Infectious Diseases, Mayo Clinic Hospital Jacksonville, Jacksonville, Florida, USA.

BMJ Case Reports
|November 22, 2019
PubMed
Summary

Tuberculosis dacryoadenitis is a rare condition causing eye pain and orbital masses. Prompt diagnosis and antituberculosis therapy can lead to successful treatment and symptom resolution.

Keywords:
TB and other respiratory infectionsophthalmology

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Area of Science:

  • Ophthalmology
  • Infectious Diseases
  • Pathology

Background:

  • Tuberculosis dacryoadenitis is an uncommon manifestation of Mycobacterium tuberculosis infection.
  • This case highlights a rare presentation in a developed country, emphasizing the need for clinical suspicion.

Observation:

  • A 25-year-old Filipino woman presented with a 5-month history of left eye pain and an orbital mass.
  • Histopathological examination of the lacrimal mass revealed necrotising granulomas.

Findings:

  • Cultures were positive for Mycobacterium tuberculosis, confirming tuberculosis dacryoadenitis.
  • The patient's symptoms resolved following antituberculosis therapy.

Implications:

  • This case underscores the importance of considering tuberculosis in the differential diagnosis of orbital masses, even in non-endemic regions.
  • Early diagnosis and appropriate antituberculosis treatment are crucial for favorable outcomes in tuberculosis dacryoadenitis.