Related Experiment Videos
Mycobacterial infection in immunocompromised patients
1Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia 19104, USA.
Journal of Thoracic Imaging
|November 3, 1998
Summary
Mycobacterial infections, including tuberculosis, pose significant risks for immunocompromised individuals, especially those with HIV. Radiographic findings in these patients can be atypical, requiring careful interpretation.
Area of Science:
- Medical Imaging
- Infectious Diseases
- Pulmonology
Background:
- Mycobacterial infections, tuberculosis (TB) and nontuberculous mycobacterial (NTM) infections, are major causes of illness and death in immunocompromised patients.
- Patients with human immunodeficiency virus (HIV) are particularly vulnerable to these infections.
- While typical postprimary TB often presents with apical, cavitary opacities, immunocompromised individuals may exhibit unusual radiographic patterns.
Purpose of the Study:
- To describe the diverse radiographic manifestations of mycobacterial infections in immunocompromised patients.
- To highlight the differences in presentation between typical TB and NTM infections in this population.
- To emphasize the increased frequency of atypical presentations in immunocompromised individuals.
Main Methods:
- Review of chest radiography findings in immunocompromised patients with confirmed mycobacterial infections.
- Comparison of radiographic patterns in patients with tuberculosis versus nontuberculous mycobacterial infections.
- Analysis of specific imaging features associated with HIV-infected patients.
Main Results:
- Postprimary tuberculosis in immunocompromised patients commonly shows characteristic apical, cavitary opacities.
- Atypical radiographic presentations of tuberculosis are more frequent in immunocompromised patients compared to the general population.
- Nontuberculous mycobacterial infections often present with varied chest radiography appearances, frequently due to hematogenous dissemination.
- In HIV-infected patients, unifocal or multifocal alveolar infiltrates and mediastinal lymphadenopathy are the most common manifestations of NTM infection.
Conclusions:
- Mycobacterial infections present a wide spectrum of radiographic findings in immunocompromised patients.
- Awareness of atypical presentations is crucial for timely diagnosis and management of mycobacterial infections in this vulnerable group.
- HIV status significantly influences the radiographic manifestations of both tuberculosis and nontuberculous mycobacterial infections.