Radiology General d1d6fc93 Cause for pneumatoceles A Staph.aureus B P.carini C H.influenzae D All of the above High-Yield Explanation Pneumatoceles an thin - walled, gas - filled cystic lung spaces. Causes : S.aureus (infants & children). P.carini (AIDS). H.influenzae & E - coli (Neonate).