Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Cardiomegaly is moderate . Subtle retrocardiac opacity best seen on lateral projection projecting over the lower thoracic spine may reflect a subtle left lower lobe pneumonia . There is no pulmonary edema . No pleural effusion or pneumothorax . Mediastinal contour appears normal . Imaged bony structures appear intact . No free air below the right hemidiaphragm . A focal eventration of the right hemidiaphragm is incidentally noted .
    OUTPUT:
    
Moderate cardiomegaly . Possible left lower lobe pneumonia .