Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size remains mildly enlarged . The mediastinal and hilar contours are unchanged . Lungs are clear though assessment of the left apex is obscured due to the patient 's chin projecting over this region . No pleural effusion or pneumothorax is seen . No acute osseous abnormalities are demonstrated .
    OUTPUT:
    
No acute cardiopulmonary abnormality .