Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is relative opacification at the right lung apex compared to the left . The remainder of both lungs are well aerated without focal consolidation or pleural effusion . No pneumothorax is present . The pulmonary vasculature is not engorged and there is no overt pulmonary edema . The cardiac silhouette is normal in size . The mediastinal contours are within normal limits . The trachea is likely slightly deviated to the left in the upper mediastinum .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Deviation of the superior trachea . Following surgery , this may be further evaluated with PA and lateral radiographs .