CTICasesNontuberculous Mycobacterial Infection (MAC and M. kansasii)
Imaging findings
A patient with HIV/AIDS has upper lobe nodules, many cavitating, on a CT from a few years prior. Cultures grew both Mycobacterium avium complex and Mycobacterium kansasii.
Key takeaways
Immunocompromised patients can be co-infected with multiple mycobacterial species, here MAC and M. kansasii together. M. kansasii often images like tuberculosis with fibrocavitary disease, but can also present as more circumscribed cavitating nodules, and multiple mycobacterial species may colonize or infect this population.
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