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Related Concept Videos

Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

256
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...
256
Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

357
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:
357

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Updated: Jul 15, 2025

Deciphering and Imaging Pathogenesis and Cording of Mycobacterium abscessus in Zebrafish Embryos
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Mycobacterial Preauricular Sinus Abscess: A Case Series.

Eric Wang Yuan Li1,2, Siti Halimahtun Sahab2, Noorizan Yahya2

  • 1Otorhinolaryngology - Head and Neck Surgery, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, MYS.

Cureus
|October 2, 2023
PubMed
Summary

Tuberculosis can cause recurrent preauricular sinus abscesses, even without lung symptoms. Early acid-fast bacilli testing and anti-tuberculous treatment are crucial for managing this rare condition.

Keywords:
ear pitsextrapulmonary tuberculosismycobacterium tuberculosispreauricular sinuspreauricular sinus abscesstuberculosis

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Area of Science:

  • Otolaryngology
  • Infectious Diseases
  • Medical Microbiology

Background:

  • Preauricular sinus is a congenital ear anomaly.
  • Tuberculosis (TB), caused by Mycobacterium tuberculosis, is endemic in Malaysia.
  • Recurrent infections pose challenges in wound healing.

Observation:

  • Three patients with recurrent tuberculous preauricular sinus abscesses across different age groups were managed.
  • Acid-fast bacilli testing is recommended for recurrent or extensive preauricular sinus infections.
  • Absence of systemic or pulmonary symptoms does not exclude tuberculosis.

Findings:

  • Successful management involved anti-tuberculous drug treatment.
  • Elective sinus excision after infection clearance prevented recurrence.
  • This highlights a rare presentation of extrapulmonary TB.

Implications:

  • Highlights the importance of considering TB in recurrent preauricular sinus infections.
  • Advocates for early diagnostic testing and appropriate treatment protocols.
  • Informs clinical practice for managing complex ear anomalies and infectious diseases.