Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Linear densities are suggestive of atelectasis or scarring . There is no definite parenchymal consolidation . There is no pleural effusion . The aorta is ectatic . No definite evidence of pulmonary vascular congestion . Cardiomediastinal silhouette is within normal limits . A moderate hiatal hernia is incidentally noted .
    OUTPUT:
    
No definite evidence of pneumonia .