Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded and clear . Cardiomediastinal and hilar contours are unremarkable . Multiple left - sided healed rib fractures are seen . Wedge - shaped area of density in the left lower thorax likely represents pleural thickening and parenchymal scarring in the setting of prior trauma . No pneumothorax , pleural effusion , or definite consolidation .
    OUTPUT:
    
No definite evidence of pneumonia . If symptoms persist , recommend repeat chest x-ray for further evaluation .