Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size , mediastinal and hilar contours are normal . Lungs are clear except for minimal linear scar or atelectasis at the left base . There is no evidence of pneumothorax . Ribs are not optimally assessed on a standard chest radiograph . With this limitation in mind , no acute , displaced rib fractures are evident . 2 . Subtle lucent bone lesions are better demonstrated on prior CT .
    OUTPUT:
    
No evidence of acute , displaced rib fracture or pneumothorax . If symptoms are localized to a specific region , consider dedicated rib radiographs with metallic marker at the site of tenderness .