pneumatocele
Pronunciation: nu-MAT-oh-seel
A thin-walled air-filled cyst in the lung, typically developing after pneumonia or trauma.
Full Definition
A pneumatocele is a thin-walled, air-filled cyst that develops within the lung parenchyma, most commonly following pneumonia (particularly staphylococcal) or blunt chest trauma. In children, pneumatoceles often develop during the healing phase of pneumonia and appear as round, thin-walled air collections on chest imaging. While they may appear concerning, most pneumatoceles in children resolve spontaneously over weeks to months and require only observation. Complications such as rupture leading to pneumothorax are rare but possible. Serial chest radiographs help monitor resolution and detect potential complications.
Usage
Usage note: Emphasize the typically benign, self-resolving nature in pediatric patients.
In Context
- "A large pneumatocele developed in the right upper lobe following resolution of staphylococcal pneumonia." — follow-up chest radiograph
- "Serial imaging showed gradual resolution of the pneumatocele over three months without intervention." — pediatric pulmonology follow-up