Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a linear opacity projecting over the right middle lobe likely represent atelectasis / scarring . Subtle right base opacities most likely represent atelectasis , however , underlying consolidation is not excluded in the appropriate clinical setting . There is no pleural effusion or pneumothorax . The cardiac silhouette is top - normal . The aorta is slightly tortuous . No overt pulmonary edema is seen .
    OUTPUT:
    
Subtle right base retrocardiac opacity may be due to atelectasis although early consolidation is not excluded in the appropriate clinical setting . Right middle lobe atelectasis / scarring .