Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Increased interstitial markings are seen throughout the lungs . Linear opacity at the left lung laterally may be due to superimposed atelectasis or scarring . There is a small left pleural effusion and blunting of the posterior costophrenic angles bilaterally suggesting small right effusion as well . Cardiomediastinal silhouette is stable . Atherosclerotic calcifications noted at the aortic arch . Surgical chain sutures seen at the left paramediastinal region superiorly . No acute osseous abnormalities .
    OUTPUT:
    
Small pleural effusions and mild edema .