Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly low , with minimal bibasilar atelectasis , greater on the left . The cardiomediastinal silhouette is unremarkable . There is no pleural effusion , pulmonary edema , pneumothorax , or focal consolidation . No subdiaphragmatic free air is noted .
    OUTPUT:
    
Low lung volumes . No acute cardiopulmonary process . No free air .