Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patchy right basilar opacity is seen which could be due to infection , aspiration , or possibly atelectasis . There is mild left base likely atelectasis . No large pleural effusion is seen . There is no pneumothorax . The cardiac silhouette is top - normal . The aorta is somewhat tortuous . There is mild central pulmonary vascular engorgement without overt pulmonary edema .
    OUTPUT:
    
Patchy right base opacity may be due to infection , aspiration , or atelectasis . Mild left base atelectasis .