CTICasesHot Tub Lung (MAC infection)
Imaging findings
Fibrotic changes (reticulation, traction bronchiectasis) combined with "tree-in-bud" nodular opacities.
Key takeaways
Hot tub lung can present with features of hypersensitivity pneumonitis (HP) but may also demonstrate true infection with Mycobacterium avium complex (MAC).
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