Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Exam is relatively unchanged compared to next preceding study with stable low lung volumes and streaky opacities in the bibasilar lungs . Opacities likely reflect atelectasis particularly given stability compared to ___ , though an early infectious process can not be entirely excluded . Stable right mid lung pleural thickening with adjacent linear opacitiy correlating with area of scarring on ___ chest CT . No pleural effusion or pneumothorax evident . The cardiomediastinal and hilar contours are unremarkable . No osseous abnormalities identified .
    OUTPUT:
    
Stable bibasilar and right mid-lung opacities likely reflecting atelectasis and scarring , though infection is not entirely excluded .