<prompt> Round pneumonia is seen withStreptococcal pneumoniaKerosene oil aspirationLung cancerMendelson syndrome  <response>: Ans. is a i.e., Streptococcal pneumonia Grainger Allisons Diagnostic Radiology Essentials Elsevier Health Sciences 201338; MDT 2014 270 Streptococcus Pneumoniae pneumococcus is the most common organism responsible for round pneumonia. Round Pneumonia is a spherical pneumonia that is usually seen in children due to the lack of collateral air drift. Streptococcus Pneumoniae pneumococcus is the most common organism responsible for round pneumonia. Round pneumonias are impoant as they may simulate a tumor mass from which they must be differentiated 