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Related Concept Videos

Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

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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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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:
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Pulmonary Tuberculosis IV01:26

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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.
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Pulmonary Tuberculosis I01:29

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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 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...
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Atypical Pneumonia01:14

Atypical Pneumonia

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Atypical pneumonia, often caused by Mycoplasma pneumoniae, is a form of pulmonary infection that differs from the classical presentation of bacterial pneumonia in both its cause and clinical symptoms. Mycoplasma pneumoniae is a pleomorphic bacterium notable for its lack of a rigid cell wall. This structural characteristic imparts resistance to beta-lactam antibiotics and significantly influences the bacterium’s behavior within the human host.Other pathogens responsible for the disease...
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Related Experiment Video

Updated: Apr 20, 2026

Bronchoalveolar Lavage of Murine Lungs to Analyze Inflammatory Cell Infiltration
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BALToma masquerading as pulmonary tuberculosis.

Rahul Magazine1, Hameed Aboobackar Shahul1, Vidya Monappa2

  • 1Department of Pulmonary Medicine, Kasturba Medical College, Manipal, Karnataka, India.

BMJ Case Reports
|November 16, 2014
PubMed
Summary
This summary is machine-generated.

A man with a history of tuberculosis was misdiagnosed with active TB. Further investigation revealed a rare Marginal Zone B-cell Lymphoma (MALToma), successfully treated with radiation therapy.

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Area of Science:

  • Oncology
  • Pulmonology
  • Pathology

Background:

  • A 53-year-old male smoker with a history of incomplete tuberculosis treatment presented with symptoms mimicking active pulmonary tuberculosis.
  • Differential diagnosis is crucial in patients with persistent respiratory symptoms and prior infections.

Observation:

  • The patient exhibited chronic cough, dyspnea, fever, weight loss, and anorexia.
  • Initial suspicion for active pulmonary tuberculosis was high due to the patient's history and symptoms.

Findings:

  • Microbiological investigations for tuberculosis were negative.
  • Histopathological evaluation of lung lesions confirmed Marginal Zone B-cell Lymphoma of Mucosa-Associated Lymphoid Tissue (MALToma/BALToma).

Implications:

  • This case highlights the importance of comprehensive diagnostic evaluation beyond initial suspicions.
  • It underscores the potential for misdiagnosis between infectious diseases like tuberculosis and lymphoid malignancies.
  • Radiation therapy proved effective for MALToma/BALToma in this patient, suggesting it as a viable treatment option.