Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Linear left basilar opacities most suggestive of atelectasis . Lungs are otherwise clear . Hilar enlargement is again noted , similar to prior . Cardiac silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
Left base atelectasis . No focal consolidation worrisome for infection . Hilar enlargement suggests pulmonary hypertension .