Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation , effusion , or pneumothorax . Known pulmonary nodules are not clearly delineated by x-ray . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process . Known pulmonary nodules should be followed as recommended on prior report .