Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . Minimal patchy opacities in the lung bases likely reflect areas of atelectasis . No focal consolidation . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Minimal patchy opacities likely reflect areas of atelectasis , though early infection in the right lung base can not be completely excluded . No evidence for active tuberculosis .