Chronic obstructive pulmonary disease

Chronic obstructive pulmonary disease is an umbrella term for a group of respiratory tract[?] diseases that are characterised by airflow limitation.

Conditions grouped here are :

• chronic bronchitis[?]
• emphysema
• bronchial asthma

(Formaly only:chronic bronchitis[?],enphysema[?] and small airways disease[?]

Common synonym : Chronic obstructive lung disease.