Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes remain low . Heart size is borderline enlarged . The mediastinal and hilar contours are unremarkable . Pulmonary vasculature is not engorged . Patchy opacities are noted in the lung bases most likely reflective of atelectasis . No focal consolidation , pleural effusion or pneumothorax is identified . There are no acute osseous abnormalities visualized .
    OUTPUT:
    
Low lung volumes with patchy opacities in the lung bases most likely reflective of atelectasis .