Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Known left upper lobe spiculated mass is partially visualized . Nipple shadows project over the lung bases bilaterally . Lungs are otherwise clear . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process . Known left upper lobe mass is only faintly visualized .