Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the chest radiograph obtained approximately 1 month prior , no significant changes are appreciated . Heart size within the range of normal without pulmonary vascular congestion or pulmonary edema . No pleural effusions . Mediastinal and hilar silhouettes are normal . The lungs are fully expanded and clear without focal consolidation or suspicious pulmonary nodules .
    OUTPUT:
    
No radiographic evidence of heart failure or other significant cardiopulmonary abnormalities .