Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without consolidation , nodules , or edema . There is no pleural effusion or pneumothorax . The size of the cardiac silhouette is at the upper limits of normal . This is unchanged from the prior exam . The osseous structures are unremarkable .
    OUTPUT:
    
Normal chest radiograph without evidence of intrathoracic malignancy .