Question: what causes cysts on lungs?
Answer: Often the lung cysts are pneumatoceles that are caused by the infection (eg, coccidioidomycosis, hyperimmunoglobulinemia E syndrome, Pneumocystis jirovecii, recurrent respiratory papillomatosis, staphylococcal pneumonia) [5-12]. (See 'Parenchymal lucencies that may mimic cysts' above.)