Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate well expanded and clear lungs . No focal opacity . No pleural effusion or pneumothorax . Heart size , mediastinal contour , and hila are unremarkable . Limited assessment of the osseous structures demonstrates a pectus deformity and is otherwise unremarkable . Visualized upper abdomen is within normal limits .
    OUTPUT:
    
Normal chest radiograph . No evidence of pneumonia .