Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiograph demonstrates moderately well inflated clear lungs . No pleural effusion or pneumothorax . Heart is top - normal in size . Mediastinal contour and hila are unremarkable . Limited assessment of the upper abdomen is within normal limits . A partially visualized catheter is seen projecting over the left chest .
    OUTPUT:
    
Normal chest radiograph .