Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left upper extremity PICC tip projects over the mid SVC . Right basilar opacity is new from ___ , little changed from ___ , most suggestive of atelectasis , though in the appropriate clinical setting , infection can not be excluded . There is no pneumothorax . The pulmonary vasculature is normal and improved . The cardiac silhouette and mediastinal contours are normal .
    OUTPUT:
    
Right basilar opacity , likely atelectasis , though in the appropriate clinical setting , infection can not be excluded . Mild edema is improved .