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. 2015 Jun 2;10:1027–1033. doi: 10.2147/COPD.S81748

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© 2015 Kurashima et al. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution – Non Commercial (unported, v3.0) License

The full terms of the License are available at http://creativecommons.org/licenses/by-nc/3.0/. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

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Two phenotypes of emphysema in relation to the numbers of airways and vessels.

Notes: Two phenotypes of emphysema are shown. Right B9 bronchi were traced from entrance of segmental bronchi to the peripheral bronchi by curved multi-planar reconstruction images. Both cases had a similar percentage predicted diffusion capacity to carbon monoxide (%DLco: 56.5% versus 53.0%, respectively), but patient (A) has fewer lung structures around airways and patient (B) has more lung structures around airways. Case (A) had a lower %FEV₁ value (62.9% versus 129.0%, respectively) and demonstrated a rapid annual decline in FEV₁ (−104 mL per year versus −55 mL per year, respectively) compared to case (B).

Abbreviation: FEV₁, forced expiratory volume in 1 second.