Paraseptal emphysema and subpleural bullae
History of smoking with shortness of breath
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Paraseptal emphysema and also bullae are seen in the periphery of the secondary pulmonary lobules.
Approximately 4 cm spiculated mass in the left upper lobe abutting the aortic arch (allowing for the lack of mediastinal windows).
Given the history of smoking and the emphysematous changes in the lungs the left upper lobe mass is likely to represent lung cancer.
- Satoh K. CT Assessment of Subtypes of Pulmonary Emphysema in Smokers. Chest. 01;120 (3): 725-729. doi:10.1378/chest.120.3.725
- Stern EJ, Frank MS. CT of the lung in patients with pulmonary emphysema: diagnosis, quantification, and correlation with pathologic and physiologic findings. AJR Am J Roentgenol. 1994;162 (4): 791-8. doi:10.2214/ajr.162.4.8140992 - Pubmed citation