CTICasesEVALI (Two Cases with Peribronchovascular Sparing)
Imaging findings
Two separate young patients presenting within 48 hours of each other with acute respiratory symptoms demonstrate CT findings of bilateral consolidative and ground-glass opacities with a striking peribronchovascular sparing pattern and subpleural sparing, classic for EVALI. Both patients were habitual THC/marijuana vapers; one had recently switched from smoking to vaping.
Key takeaways
EVALI (e-cigarette or vaping product use-associated lung injury) characteristically shows bilateral consolidation with a peribronchovascular distribution of sparing on CT, reflecting relative preservation of peribronchial tissue. Subpleural sparing, which mimics organizing pneumonia, is also a notable feature. The striking peribronchovascular sparing is a key differentiating feature from COVID-19 pneumonia.
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