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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.
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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.
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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.
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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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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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Pneumonia is an infection of the lower respiratory tract that leads to inflammation of the lung parenchyma, often resulting in the accumulation of inflammatory exudate in the alveoli and airways. Unlike the watery, low-protein fluid exudate in pulmonary edema, the exudate in this case is a thick fluid rich in immune cells, proteins, and debris produced during infection and inflammation.This impairs gas exchange and can lead to consolidation of lung tissue. The infection may be caused by a...
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Mycobacterium interjectum Lung Infection.

M C Mirant-Borde1, S Alvarez, M M Johnson

  • 1Division of Pulmonary Medicine, Mayo Clinic Florida, 4500 San Pablo Road, Jacksonville, FL 32224, USA.

Case Reports in Pulmonology
|November 7, 2013
PubMed
Summary
This summary is machine-generated.

A rare case of destructive lung disease caused by Mycobacterium interjectum in an immunocompetent adult is presented. Prompt diagnosis and multi-drug therapy led to significant clinical and radiographic improvement, highlighting this pathogen as a potential cause of pulmonary disease.

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Area of Science:

  • Pulmonary Medicine
  • Infectious Diseases
  • Microbiology

Background:

  • Nontuberculous mycobacterial (NTM) pulmonary disease is increasingly recognized.
  • Mycobacterium avium intracellulare (MAI) is a common cause of NTM lung disease, typically presenting with chronic cough and fatigue.
  • Destructive lung disease is an uncommon presentation of NTM infections, particularly in immunocompetent individuals.

Purpose of the Study:

  • To report a rare case of destructive pulmonary disease caused by Mycobacterium interjectum in an immunocompetent adult.
  • To highlight the diagnostic challenges and treatment strategies for this rare mycobacterial infection.
  • To contribute to the limited literature on M. interjectum as an etiology of lung disease.

Main Methods:

  • Case presentation of a 62-year-old male with symptoms suggestive of pulmonary infection.
  • Chest X-ray (CXR) revealed a cavitary lesion in the right upper lobe.
  • Sputum and lung specimens were analyzed for mycobacterial identification, including Mycobacterium tuberculosis and other NTM species.

Main Results:

  • Initial evaluation was negative for Mycobacterium tuberculosis.
  • Sputum cultures initially identified Mycobacterium avium intracellulare (MAI).
  • Further investigations identified Mycobacterium interjectum as the causative agent of pulmonary disease.
  • The patient received a multi-drug regimen including rifampin, amikacin, trimethoprim/sulfamethoxazole (TMP/SMX), and ethambutol.
  • Treatment resulted in clinical and radiographic improvement.

Conclusions:

  • Mycobacterium interjectum is a rare but significant cause of destructive lung disease, even in immunocompetent hosts.
  • Atypical presentations of NTM infections warrant thorough investigation to identify the specific causative organism.
  • Multi-drug therapy can be effective in managing M. interjectum pulmonary disease, leading to favorable outcomes.