Pneumatocele is caused by-

Ans. is 'a' i.e., Staphylococcus Pneumatoceles o These are multiple thin walled air containing cysts. o Staphylococcus aureus is the most common organism causing pneumatoceles and pneumatoceles are considered pathognomonic of staphylococcal pneumonia. o E.coli and klebsiella pneumonia may have pneumatoceles.