Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Prominent breast tissue likely accounts for lower lung vague opacities over the lower lungs . There is no definite sign of pneumonia or CHF . No pleural effusion or pneumothorax is seen . The cardiomediastinal silhouette is stable . Bony structures are intact . Partially imaged cervical spine fusion hardware is noted .
    OUTPUT:
    
No signs of pneumonia .