atelectasis

obstructive atelectasis (resorptive) airless lung
- tumor
- foreign body
- mucous plug
- stricture
passive atelectasis (compressive or elastic recoil)
- low inspiratory volumes
- pleural effusion
- pneumothorax
- pleural masses
adhesive (decreased surfactant)
- hyaline membrane disease
- pulmonary embolus with infarction
cicatrization (fibrosis: local or general leading to volume loss)

Charles E. Kahn, Jr., MD - 2 February 1995
Last updated: 1 October 2013