Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chest , AP and lateral . There is dense , somewhat linear opacity in the right lower lobe in a pattern similar to , but increased from the prior radiograph . There is minimal left lower lobe atelectasis . The lungs are otherwise clear . Mild cardiomegaly is chronic . The mediastinum is unremarkable . There is no pneumothorax or pleural effusion . The pulmonary vascularity is normal .
    OUTPUT:
    
Right lower lobe opacity is likely atelectasis however superimposed pneumonia can not be fully excluded . Given chronicity , CT should be considered to more fully evaluate . This recommendation was emailed to the ED QA nurses .