Paraseptal emphysema and subpleural bullae
Shortness of breath in patient with long history of smoking.
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Multiple bilateral air filled cystic spaces with characteristic peripheral and subpleural location.
The ones ≤10 mm in diameter are considered paraseptal emphysema, and the ones with diameter >10 mm are considered bullae.
65 years old smoker patient with shortness of breath. CT demonstrates bilateral pulmonary paraseptal emphysema as well as subpleural blebs/bullae.