640px-alpha_1-antitrypsine_deficiency_lung_ct_scan

Computed tomography of the lung showing emphysema and bullae in the lower lung lobes of a subject with type ZZ alpha-1-antitrypsin deficiency. There is also increased lung density in areas with compression of lung tissue by the bullae. | By Laura Fregonese and Jan Stolk – Hereditary alpha-1-antitrypsin deficiency and its clinical consequences. Orphanet Journal of Rare Diseases 2008, 3:16. doi:10.1186/1750-1172-3-16., CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=5545624