Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate a normal cardiomediastinal silhouette . The well - aerated lungs are clear and there is no pleural effusion or pneumothorax .
    OUTPUT:
    
Clear lungs without evidence of pneumonia or pleural effusion . A preliminary read was provided , upon request , via telephone by Dr . ___ ___ to Dr . ___ at ___ on ___ .