Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the chest radiograph obtained approximately 6 hours prior , no significant changes are appreciated . Heart size and cardiomediastinal silhouette are unchanged . No pulmonary vascular congestion or pulmonary edema or pleural effusions . The lungs are fully expanded and clear without focal consolidation . A right - sided IJ sheath is unchanged in position in the upper SVC .
    OUTPUT:
    
No pulmonary edema or other acute cardiopulmonary abnormalities .