Pulmonary pneumatocele is a thin-walled. gas-filled space within the lung that usually occurs in association with bacterial pneumonia and is usually transient. The majority of pneumatoceles resolve spontaneously without active intervention. but in some cases they might lead to pneumothorax with subsequent hemodynamic instability. https://www.ngetikin.com/amazing-find-Bolia-Loop-Rug-limited-choice/