pulmonary emphysema https://www.malacards.org/card/pulmonary_emphysema MESH:D011656 ICD10CM:J43 DOID:9675 ICD9:492 emphysema UMLS:C0034067 NCIT:C3348 emphysema, pulmonary EFO:0000464 MESH:D004646 SCTID:87433001 A subcategory of chronic obstructive pulmonary disease (COPD). It occurs in people who smoke and suffer from chronic bronchitis. It is characterized by inflation of the alveoli, alveolar wall damage, and reduction in the number of alveoli, resulting in difficulty breathing. MEDGEN:18764 MONDO:0004849 ICD9:492.8 chronic obstructive pulmonary disease