Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Vague opacity at the right lung base on the frontal view is likely atelectasis as there is no correlate on the lateral . The lungs are clear without focal consolidation , effusion , or edema . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process .