Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouettes are within normal limits . The bilateral hila are unremarkable . Lung volumes are low , with crowding of normal bronchovascular structures . There is left basilar atelectasis . There is no focal lung consolidation . There is no evidence of pulmonary vascular congestion or pulmonary edema . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
No acute cardiopulmonary process .