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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 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 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 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...

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Related Experiment Video

Updated: May 21, 2026

Use of Electromagnetic Navigational Transthoracic Needle Aspiration (E-TTNA) for Sampling of Lung Nodules
06:03

Use of Electromagnetic Navigational Transthoracic Needle Aspiration (E-TTNA) for Sampling of Lung Nodules

Published on: May 23, 2015

Bilateral nodular pulmonary tuberculomas simulating metastatic disease.

Surya Kant1, S Saheer, Ved Prakash

  • 1Department of Pulmonary Medicine, CSMMU, Lucknow, India. dr.kantskt@rediffmail.com

BMJ Case Reports
|June 16, 2012
PubMed
Summary

Tuberculosis (TB) can mimic lung cancer metastasis. This case highlights that bilateral nodular lung opacities, often indicative of malignancy, may actually be tuberculosis, responding well to treatment.

Related Experiment Videos

Last Updated: May 21, 2026

Use of Electromagnetic Navigational Transthoracic Needle Aspiration (E-TTNA) for Sampling of Lung Nodules
06:03

Use of Electromagnetic Navigational Transthoracic Needle Aspiration (E-TTNA) for Sampling of Lung Nodules

Published on: May 23, 2015

Area of Science:

  • Pulmonology
  • Infectious Diseases
  • Radiology

Background:

  • Bilateral nodular lung opacities on imaging are frequently associated with metastatic disease.
  • Distinguishing between malignancy and infection can be challenging based solely on radiological findings.

Observation:

  • A 62-year-old female presented with bilateral nodular lung opacities on chest radiography and CT, initially suspected to be metastatic cancer.
  • Histopathology revealed caseating granulomas, prompting further investigation for tuberculosis.

Findings:

  • The patient's clinical and radiological response to antitubercular treatment confirmed the diagnosis of tuberculosis.
  • This case underscores the importance of considering tuberculosis in the differential diagnosis of bilateral nodular lung opacities.

Implications:

  • Tuberculosis should be included in the differential diagnosis for patients presenting with bilateral nodular lung opacities, even when metastatic disease is suspected.
  • Accurate diagnosis through histopathology and response to treatment is crucial for effective management.
  • Radiological presentations of tuberculosis can mimic secondary lung malignancies, necessitating a broad diagnostic approach.