Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear within normal limits . There are horizontal linear opacities in the right costophrenic sulcus which are nonspecific . Possibilities include scarring ; an acute process such as vascular congestion , while not entirely excluded , is doubted given the fact that the pulmonary vascularity is otherwise within normal limits . There is a patchy opacity obscuring the left hemidiaphragm but most suggestive of minor atelectasis or scarring . There is mild leftward convex curvature centered at the thoracolumbar junction .
    OUTPUT:
    
1 . Septal lines at the lateral right lung base which are nonspecific and could be associated with scarring . Although not entirely excluded , pulmonary congestion is doubted since these are unilateral and not accompanied by generalized interstitial or pulmonary vascular abnormality . 2 . Left basilar opacity , probably compatible with atelectasis , although an infectious cause would not be excluded in the appropriate setting .