- Etiology: transient collection of interstitial air due to Staphylococcus pneumonia (necrotic bronchi), blunt thoracic trauma, positive pressure ventilation, hydrocarbon ingestion
- Imaging: has thin wall, usually no air-fluid level in infectious cases, occurs later in infection
- DDX: abscess
— Abscess appears earlier in infection, has thick irregular walls, lasts long time
— Pneumatocoele occurs later in infection, has thin wall, usually no air fluid level
Radiology Cases of Pneumatocele
Radiology Cases of Post Infectious Pneumatocele

Radiology Cases of Post Traumatic Pneumatocele
