Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The hilar and mediastinal contours are within normal limits . Lungs are well expanded and clear . There is no evidence of pneumonia , pleural effusion , pneumothorax or pulmonary edema . Visualized osseous structures are grossly unremarkable .
    OUTPUT:
    
No radiographic evidence of an acute cardiopulmonary process .