Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . Again seen is a slight opacity at the medial right lung base . This opacity does not have the typcial appearance of a pulmonary lesion and is unlikely to be of clinical significance . The cardiomediastinal silhouette , hilum , and pleural surfaces are normal . There is mild scoliosis of the thoracic spine .
    OUTPUT:
    
Right basilar opacity likely not of clinical significance . Unremarkable chest radiograph .