Mycobacteria-acid fast stain

Mycobacterial Infections

Dr Patsy Lill
Professor Emerita
University of South Carolina School of Medicine

Acid fast stain

Below is an acid fast stain from the lung of a 27-year-old man.

The image MOST likely represents

1. Mycobacterium avium in an AIDS patient

2. Mycobacterium leprae in a patient with tuberculoid leprosy

3. Mycobacterium tuberculosis in a patient with primary tuberculosis

4. Mycobacterium tuberculosis in a patient with secondary tuberculosis

ANSWER

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Pathology questions by Dr Patsy Lill