Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are mildly hypoinflated with crowding of vasculature . No pneumothorax . Persistent blunting of the right costophrenic angle . No left pleural effusion . Bibasilar reticular opacities are consistent with interstitial fibrosis , unchanged in appearance since prior examination . Heart size , mediastinal contour , and hila are unremarkable .
    OUTPUT:
    
1 . Chronic severe restrictive pulmonary fibrosis . 2 . No evidence of pneumonia , cardiac decompensation or other acute abnormality .