In AIDS, non-tuberculous mycobacteria produce interstitial collections of macrophages that have a striated appearance because they are filled with organisms. Granulomas are not usually present.
Mycobacterial Diseases
Non-tuberculous mycobacterial pneumonia in AIDS
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In AIDS, non-tuberculous mycobacteria produce interstitial collections of macrophages that have a striated appearance because they are filled with organisms. Granulomas are not usually present. | ||||||
Non-tuberculous mycobacteria in AIDS--acid fast stain
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An acid fast stain shows the large numbers of organisms that are present in each cell. | ||||||
Bronchocentric granulomatosis
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This bronchiole is almost completely occluded by granulomatous inflammation. Two small lumens remain (arrows). This lesion is frequent in non-tuberculous mycobacterial infections in the non-immunocompromised, where it may be associated with bronchiectasis. | ||||||
Bronchocentric granulomatosis, a reaction pattern and not a disease, also occurs with tuberculosis, allergic bronchopulmonary aspergillosis, and other infectious and non-infectious conditions. It may be idiopathic.
