CTICasesMycobacterium kansasii infection
Imaging findings
Serial chest radiographs and CT scans show progressive volume loss in both upper lobes, bilateral cavitary disease, traction bronchiectasis, and the development of a mobile soft tissue mass (aspergilloma) within the right upper lobe cavity, in a patient with COPD and chronic Mycobacterium kansasii infection.
Key takeaways
Mycobacterium kansasii is a non-tuberculous Mycobacterium that classically causes a cavitary lung disease mimicking pulmonary tuberculosis, especially in patients with pre-existing lung disease like COPD. Over time, these cavities can become colonized by Aspergillus, forming a secondary mycetoma.
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