Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Mediastinal hilar contours are normal . Lungs are clear . No pleural effusion or pneumothorax is present , however the left costophrenic angle is excluded from the field of view . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary abnormality .