Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The aortic arch shows patchy calcification . There is a suspected small pleural effusion on the left and a possible layering pleural effusion on the right . Pulmonary architecture appears coarse and irregular . The interstitium is also moderately prominent in the mid-to - lower lungs . There is no pneumothorax . Prior healed rib fractures involve the right posterior third through fifth ribs . The right acromioclavicular joint is widened and the distal right clavicle has an expansile appearance . The latter findings are probably also post-traumatic .
    OUTPUT:
    
Findings suggesting mild pulmonary edema , possibly superimposed on an underlying parenchymal abnormality .