Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are symmetrically well expanded and well aerated without focal consolidation , pleural effusion or pneumothorax . The pulmonary vasculature is slightly prominent , but grossly stable . The cardiac silhouette is normal in size . The mediastinal and hilar contours are within normal limits . Mild calcification of the aortic knob is noted and unchanged from the prior study . The trachea is midline . Chronic appearing deformity of the distal right clavicle is again seen .
    OUTPUT:
    
Mild pulmonary vascular congestion . No focal consolidation .