Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are markedly low . This results in exaggeration of the cardiac silhouette size which is borderline enlarged . Mediastinal and hilar contours are unremarkable . Crowding of the bronchovascular structures is present without overt pulmonary edema . Patchy and linear opacities in the lung bases most likely are reflective of atelectasis . No focal consolidation , pleural effusion or pneumothorax is identified . No acute osseous abnormality is visualized .
    OUTPUT:
    
Markedly low lung volumes . Patchy and linear bibasilar opacities most likely reflect atelectasis .