Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . There is linear opacity at the right lung base on the frontal view without correlate on the lateral , likely due to atelectasis . The lungs are otherwise clear without consolidation or pneumothorax . Prior effusions have resolved . The cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
No acute cardiopulmonary process .