Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left Port - A - Cath terminates in the right atrium , unchanged from prior . Lung volumes are extremely low resulting in bronchovascular crowding and limited evaluation of the lung bases . Diffuse interstitial opacities have increased , and despite the low lung volumes , findings are consistent with superimposed pulmonary edema on a background of pulmonary fibrosis . No large pleural effusion is evident . There is no pneumothorax . Cardiomediastinal and hilar contours are within normal limits . High density material within multiple mid thoracic vertebral bodies is likely related to prior kyphoplasty , unchanged from prior .
    OUTPUT:
    
Superimposed pulmonary edema on a background of pulmonary fibrosis . Low lung volumes limit assessment for basilar consolidation .