Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP supine view of the chest was obtained . Allowing for differences in technique and positioning , cardiomediastinal silhouette is unchanged . Heavy calcifications are again noted in the aortic arch and the tracheobronchial tree . The lungs are clear . There is no pleural effusion or pneumothorax . Deviation of the trachea may relate to an enlarged thyroid gland .
    OUTPUT:
    
No acute cardiopulmonary process , chronic coarsening of the reticular markings and pulmonary vascular cephalization .