Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Venous catheter tip in the mid SVC , similar . Pulmonary vascularity has improved since prior exam . Borderline heart size . Tortuous thoracic aorta . Mildly elevated right hemidiaphragm , similar . Basilar atelectasis has resolved . No consolidations . Chronic left rib fracture .
    OUTPUT:
    
Interval mild improvement .