Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to the most recent prior examination , there has been no significant interval change . Redemonstrated is a small degree of linear atelectasis at the left lung base . Lung volumes remain low . There is no evidence of focal consolidation , pleural effusion , pneumothorax , or pulmonary edema . The cardiomediastinal silhouette is within normal limits . The patient is status post cervical spine fixation with hardware noted in unchanged position .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .