Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left infusion port unchanged , ending in the mid SVC . Interval improvement in left basilar atelectasis since ___ with no change in right basilar atelectasis . Normal heart size and mediastinal contour with no displacement of aortic knob calcification . Normal hilar and pleural surfaces .
    OUTPUT:
    
1 . Stable appearance of mediastinal contour and heart size with no findings to suggest dissection . 2 . Left basilar atelectasis improved with persistent right basilar atelectasis .