Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is minimal left lower lung scarring . The lungs are otherwise clear . The heart size is normal . The mediastinal contours are normal . There are no definite pleural effusions , although tiny effusions can not be excluded as the posterior costophrenic angles are not included on the lateral projection . There is no pneumothorax .
    OUTPUT:
    
No acute cardiac or pulmonary findings .