Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the ___ , chest x-ray , an area of atelectasis or consolidation in the left retrocardiac region has cleared . Focal scarring is present in the lingula and left lower lobe . Lung volumes remain increased , consistent with COPD . Cardiomediastinal contours are unchanged in appearance . No pleural effusion or acute skeletal findings .
    OUTPUT:
    
Resolution of left lower lobe process .