Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The aortic knob is calcified . Mediastinal and hilar contours are within normal limits . Pulmonary vasculature is not engorged . Patchy opacities in the lung bases likely reflect areas of atelectasis , and no focal consolidation is present . Punctate calcifications are noted within the left lung , likely granulomas . No pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
Patchy opacities within the lung bases likely reflect areas of atelectasis , but early infection can not be completely excluded in the correct clinical setting .